MELSEC System Q. QJ71PB92D PROFIBUS/DP Interface Module. Programmable Logic Controllers. User's Manual MITSUBISHI ELECTRIC MITSUBISHI ELECTRIC

Transcription

1 MITSUBISHI ELECTRIC MELSEC System Q Programmable Logic Controllers User's Manual QJ71PB92D PROFIBUS/DP Interface Module Art. no.: SH (NA) Version C MITSUBISHI ELECTRIC INDUSTRIAL AUTOMATION

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3 SAFETY PRECAUTIONS (Read these precautions before using.) Before using this product, please read this manual and the relevant manuals introduced in this manual carefully and pay full attention to safety to handle the product correctly. The instructions given in this manual are concerned with this product. For the safety instructions of the programmable controller system, please read the CPU module user's manual. In this manual, the safety instructions are ranked as "DANGER" and "CAUTION".! DANGER Indicates that incorrect handling may cause hazardous conditions, resulting in death or severe injury.! CAUTION Indicates that incorrect handling may cause hazardous conditions, resulting in medium or slight personal injury or physical damage. Note that the! CAUTION level may lead to a serious consequence according to the circumstances. Always follow the instructions of both levels because they are important to personal safety. Please save this manual to make it accessible when required and always forward it to the end user. [DESIGN PRECAUTIONS]! DANGER When a communication error occurs in the PROFIBUS network, the status of the faulty station is as follows. Configure an interlock circuit in the sequence program using the communication status information (input X1, buffer memory 2040 to 2079) so that the system can operate safely. Erroneous outputs and mis-operation could cause accidents. (1) The input data of the master station maintains the data before abnormality of the communication. (2) When the master station is down, the output state of each slave station will be in accordance with the parameter settings. (3) When any slave station is down, the output state of other slave stations will be in accordance with the parameter settings of the master station. Do not output the "prohibited to use" signal as the output signal to an intelligent function module from the PLC CPU. Writing data into the "system area" or outputting a signal for "prohibited to use" may cause system malfunction in the PLC. If a stop error occurs in the CPU module, the communication status is as described below. (1) Communication with the slave station is continued. (2) The input data received from the slave station are updated in the buffer memory of the QJ71BP92D. (3) For the output data sent from the QJ71PB92D to the slave station, the values at CPU module stop error occurrence are held. A - 1 A - 1

4 [DESIGN PRECAUTIONS]! CAUTION When the PROFIBUS cable is laid, do not lay it close to main circuits or power lines. They should be installed 100mm(3.9inch) or more from each other. Not doing so could result in noise that would cause malfunctioning. [INSTALLATION PRECAUTIONS]! CAUTION Use the PLC in an environment that meets the general specifications contained in the CPU user's manual. Using this PLC in an environment outside the range of the general specifications may cause electric shock, fire, malfunction, and damage to or deterioration of the product. When installing the module, securely insert the module fixing tabs into the mounting holes of the base module while pressing the installation lever located at the bottom of the module downward. Improper installation may result in malfunction, breakdown or the module coming loose and dropping. Securely fix the module with screws if it is subject to vibration during use. Tighten the screws within the range of specified torque. If the screws are loose, it may cause the module to fallout, short circuits, or malfunction. If the screws are tightened too much, it may cause damage to the screw and/or the module, resulting in fallout, short circuits or malfunction. Switch all phases of the external power supply off when mounting or removing the module. Not ding so may cause electric shock or damage to the module. Do not touch the conductive area or electric parts of the module. Doing so may cause module malfunctioning or breakdowns. A - 2 A - 2

5 [WIRING PRECAUTIONS]! CAUTION Switch all phases of the external power supply of the PLC system off before connecting the PROFIBUS cable. If you not switch off the external power supply, it will cause failure or malfunction of the module. Be careful not to let foreign matter such as filings or wire chips get inside the module. These can cause fire, breakdowns and malfunctioning. The PROFIBUS cable which is connected to the module must be protected with a duct or secured in position with clamps. Unless the cable is thus protected or secured, the module or the cable could be damaged when the cable swings, moves or it is strained with careless pulls, or it could cause malfunction when the cable contacts with any undesirable objects. When disconnecting the PROFIBUS cable from the module, do not pull by holding the cable section. To disconnect the cable, make sure to hold the connector which is coupled with the module. Do not attempt to pull the cable to disconnect it from the module. It could damage the module or the cable, or cause malfunction due to a poor contact of the cable. Be sure to fix communication cables or power supply cables leading from the module by placing them in the duct or clamping them. Cables not placed in the duct or without clamping may hang or shift, allowing them to be accidentally pulled, which may cause a module malfunction and cable damage. [STARTING AND MAINTENANCE PRECAUTIONS]! DANGER Switch all phases of the external power supply off before cleaning. Not doing so could cause electric shock.! CAUTION Never disassemble or modify the module. This may cause breakdowns, malfunctioning, injury and/or fire. Switch all phases of the external power supply off before mounting or removing the module. If you do not switch off the external power supply, it will cause breakdowns or malfunction of the module. Set the ON/OFF select switch of the terminal resistor before the operation. If the setting is switched during the operation, network error may occur, or error detection may not be performed by error. Always make sure to touch the grounded metal to discharge the electricity charged in the body, etc., before touching the module. Failure to do so may cause a failure or malfunctions of the module. A - 3 A - 3

6 [DISPOSAL PRECAUTIONS]! CAUTION When disposing of this product, treat it as industrial waste. A - 4 A - 4

7 REVISIONS * The manual number is given on the bottom left of the back cover. Print Date * Manual Number Revision Dec., 2000 SH (NA) A First printing May, 2001 SH (NA) B Corrections About the Generic Terms and Abbreviations, Section 2.1, 2.4, 4.1.3, 4.1.4, 5.1, 5.1.1, 5.4, 8.1, 8.2 Apr., 2004 SH (NA) C Corrections Section 1.2, 2.1, 2.4, 3.1, 3.2.3, 3.3.2, 3.4.2, 4.1.4, 5.1, 5.1.1, 5.2.1, 5.3, 5.5.3, 6.1, 6.2, Chapter 7, Section 7.1, Chapter 9, Appendix 1, Appendix 3 Additions SAFETY PRECAUTIONS, About Manuals, Conformation to the EMC Directive and Low Voltage Instruction, Section 7.1, Chapter 9 Japanese Manual Version SH C This manual confers no industrial property rights or any rights of any other kind, nor does it confer any patent licenses. Mitsubishi Electric Corporation cannot be held responsible for any problems involving industrial property rights which may occur as a result of using the contents noted in this manual MITSUBISHI ELECTRIC CORPORATION A - 5 A - 5

8 INTRODUCTION Thank you for purchasing the Mitsubishi Programmable Controller Series. Before using the equipment, plese read this manual carefully to develop full familiarity with the functions and performance of the graphic operation terminal you have purchased, so as to ensure correct use. Please forward a copy of this manual to the end user. CONTENTS SAFETY PRECAUTIONS...A - 1 REVISIONS...A - 5 INTRODUCTION...A - 6 CONTENTS...A - 6 About Manuals...A - 8 Conformation to the EMC Directive and Low Voltage Instruction...A - 9 About the Generic Terms and Abbreviations...A - 9 Product Structure...A OVERVIEW 1-1 to Software Configuration QJ71PB92D Features SYSTEM CONFIGURATION 2-1 to Adaptive System When Used in Multi-CPU System Precautions for Configuring a System Confirmation of Serial No SPECIFICATIONS 3-1 to Performance Specifications Network Configuration Basic configuration Applicable configuration Number of connectable slaves I/O Signal I/O signal list I/O signal detail description Buffer Memory List Buffer memory/configuration Buffer memory detailed description FUNCTIONS 4-1 to Functions for Exchanging with Slaves Exchange flow Global control functions Word data swap function I/O data separation prevention function A - 6 A - 6

9 4.2 Operation Mode Normal service mode (MODE 0) Extended service mode (MODE E) PROCEDURES BEFORE SYSTEM OPERATION 5-1 to Procedures before Operation Parameter setting procedure Installation Handling precautions Installation environment Part Names and Settings Execution Method for Self-diagnosis Wiring PROFIBUS cable wiring Terminator switch Precautions against wiring Maintenance and Inspection COMMUNICATION TIME 6-1 to Bus Cycle Time Transmission Delay Time PROGRAMMING 7-1 to Communication Using Automatic Refresh Setting Normal Service Mode (MODE 0) Using FROM/TO Instruction Extended Service Mode (MODE E) Using FROM/TO Instruction Normal Service Mode (MODE 0) Using Dedicated Instruction Execution of Global Control DEDICATED INSTRUCTIONS 8-1 to BBLKRD Instruction BBLKWR Instruction TROUBLESHOOTING 9-1 to Initialization of Flash ROM When Parameters are Corrupted APPENDIX Appendix - 1 to Appendix - 3 Appendix 1 Differences between QJ71PB92D and AJ71PB92D/A1SJ71PB92D...Appendix - 1 Appendix 2 Extended Trouble Information of Mitsubishi's Slaves...Appendix - 2 Appendix 3 Outline Drawings...Appendix - 3 INDEX Index 1 A - 7 A - 7

10 About Manuals The following are manuals related to this product. Request for the manuals as needed according to the chart below. Related Manuals Manual Name MELSoft GX Configurator-DP 4.00 Configuration System for Open Networks Software Manual Explains the overview, installation method, screen operations, etc. of GX Configurator-DP Version 4. (Sold separately) GX Configurator-DP Version 6 Operating Manual Explains the overview, installation method, screen operations, etc. of GX Configurator-DP Version 6. (Sold separately) Manual Number IB SH ENG Inquiries can be made to : MITSUBISHI ELECTRIC EUROPE Factory Automation Gothaer Strasse 8 D Ratingen Germany Phone : +49(21 02)486-0 Fax : +49(21 02) A - 8 A - 8

11 Conformation to the EMC Directive and Low Voltage Instruction For details on making the Mitsubishi PLC conform to the EMC directive and low voltage instruction when installing it in your product, refer to Chapter 3 "EMC Directive and Low Voltage Instruction" of the used CPU module User's Manual (Hardware). The CE logo is printed on the rating plate on the main body of the PLC that conforms to the EMC directive and low voltage instruction. No specific measures are required to make this product conform to the EMC directive and low voltage instruction. About the Generic Terms and Abbreviations Unless otherwise specified, this manual uses the following generic terms and abbreviations to describe the Type QJ71PB92D PROFIBUS-DP interface module. Generic Term/Abbreviation QJ71PB92D QCPU (Q mode) Base unit GX Configrator-DP PROFIBUS Master station Slave station Peripheral device Description of the abbreviation/general terms Abbreviated name of Type QJ71PB92D PROFIBUS-DP interface module Generic name of series PLC CPU module compatible with QJ71PB92D Generic name of series main base unit and extension base unit compatible with QJ71PB92D Abbreviated name of configurator for PROFIBUS-DP Abbreviated name of PROFIBUS-DP network Abbreviated name of master station (class 1) (master device) inside PROFIBUS-DP network Abbreviated name of slave station (slave device) inside PROFIBUS-DP network Generic name of personal computer capable of using GX Configuration-DP Product Structure The product structure of this product is given in the table below. Model Product Name Quantity QJ71PB92D Type QJ71PB92D PROFIBUS-DP interface module 1 A - 9 A - 9

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13 1 OVERVIEW 1. OVERVIEW 1 This is the user's manual for the QJ71PB92D PROFIBUS-DP interface module (hereafter abbreviated as " QJ71PB92D. When explain separately, however, abbreviated as QJ71PB92D), which is used to connect a series programmable controller to a PROFIBUS-DP network. The QJ71PB92D operates as a master station (class 1) in the PROFIBUS-DP network. 1.1 Software Configuration MELSEC Q Series PC Automatic refresh, FROM/TO, Dedicated instruction Portion where master PCB is installed Communication using a buffer memory User Interface Portion where slave PCB is installed Direct Data Link Mapper (DDLM) empty Layer 3 to 7 FDL PHY FMA1/2 Layer 2 Datalink layer Layer 1 Physical layer The QJ71PB92D has a physical layer, data link layer, DDLM, and user interface that conform to PROFIBUS-DP, and communicates data with the PLC CPU by using a buffer memory. The main application of PROFIBUS-DP is networks that execute high-speed communication at the level of sensors and actuators

14 1 OVERVIEW 1.2 QJ71PB92D Features (1) Operates as a PROFIBUS-DP master (class 1) station. 1 (2) Makes possible the exchange of input and output data to and from the slave station without the need to be aware of the PROFIBUS-DP protocol by using I/O signals X/Y and the buffer memory. (3) Supports 3M, 6M, 12M [bps] network communication speeds in addition to the 9.6k, 19.2k, 93.75k, 187.5k, 500k, and 1.5M [bps] supported by the QJ71PB92D. These can be selected using a configurator. (4) Trouble information can be read from the slave station using the I/O signal X/Y and the buffer memory. (5) The global control function makes it possible to maintain all slave I/O at the same time. In addition, this can also be canceled. (6) The module contains a self-diagnosis function that can be used to test the hardware such as the internal memory. (7) The upper and lower bytes of I/O data can be swapped on the buffer memory. When word data is handled, these bytes need not be swapped using the sequence program. (8) For data transmission between the PLC CPU and buffer memory of QJ71PB92D, the automatic refresh setting and dedicated instruction are used to prevent I/O data from being separated. : The data of specified sizes are not matched with each other. (9) Even when a plurality of PLC CPU modules are installed through the multi-cpu system, this model can be controlled by any PLC CPU module

15 2 SYSTEM CONFIGURATION 2. SYSTEM CONFIGURATION 2.1 Adaptive System This chapter describes the system configuration of QJ71PB92D. 2 The modules and software programs used on QJ71PB92D are shown below. (1) Applicable modules and number of mountable modules The following table indicates the CPU modules that can be used with the QJ71PB92D and the number of mountable modules. Applicable module Number of mountable modules Remarks Q00JCPU Max. 16 modules Q00CPU ( 1) Max. 24 modules Q01CPU CPU module Q02CPU Q02HCPU Q06HCPU Q12HCPU Q25HCPU Q12PHCPU Q25PHCPU Max. 64 modules Available in Q mode only. ( 1) Max. 64 modules ( 1) 1: Refer to the user's manual (function explanation/program fundamentals) of the used CPU module. (2) Mountable base units The QJ71PB92D can be mounted on any I/O slot of the base unit. However, since the power supply capacity may be insufficient depending on the combination with the other mounted modules and the number of mounted modules, be sure to check the power supply capacity when mounting the modules. (3) Compatibility with multiple CPU system When using the QJ71PB92D in a multiple CPU system, first refer to the user's manual (function explanation/program fundamentals) of the used CPU module. (a) Compatible QJ71PB92D When using the QJ71PB92D in a multiple CPU system, use the QJ71PB92D of function version B or later. (4) Online module change The QJ71PB92D does not support the online module change

16 2 SYSTEM CONFIGURATION (5) Essential configuration software Set the parameters of the QJ71PB92D using the following configuration software. System configuration For use with the Q00J/Q00/Q01CPU For use with the Q02/Q02H/Q06H/Q12H/Q25HCPU For use with the Q12PH/Q25PHCPU Configuration software GX Configurator-DP Version 5.00A or later GX Configurator-DP Version 4.00A or later 2 POINT Do not use the separation prevention function in CPU modules which do not support this function or incorrect I/O data will result

17 2 SYSTEM CONFIGURATION 2.2 When Used in Multi-CPU System When using QJ71PB92D in the multi-cpu system, take care of the following. The control of QJ71PB92D is performed by any CPU. A total of merely 64 sheets of QJ71PB92D is installed for each system. It is not the mountable number of sheets for each controlled CPU, but the total number of sheets controlled by all CPUs. CPU 1 CPU 2 CPU 3 CPU

18 2 SYSTEM CONFIGURATION 2.3 Precautions for Configuring a System (1) The following configuration software programs cannot be used on QJ71PB92D. SW05F-PROFIMAP MELSEC-PROFIMAP 1.0 MELSEC-PROFIMAP 2.0 MELSEC-PROFIMAP 3.0 (2) The separation prevention function can be used only on those products having QCPU (Q mode) with serial No and subsequent. If this function is used on products that do not support it, incorrect I/O data will result. (3) When performing the following operations, ensure that the module READY signal X1D of QJ71PB92D is turned ON beforehand. To switch over the operation mode with Y11/X11, using the sequence program. To set parameters. If the status of X1D is ignored and data is read from or written in the buffer memory, the CPU module may detect an error to stop the sequence calculation. (4) Do not write parameters in QJ71PB92D simultaneously from a plurality of GX Configurator-DPs. The parameter values of QJ71PB92D will become incorrect ones. (5) If remote parameter setting is performed from GX Configrator-DP to the QJ71PB92D which is making data exchange, note that PROFIBUS data exchange will stop during parameter setting. (6) When setting parameters in GX Configurator-DPs, do not perform the mode selection using a program. The parameter setting or mode selection may not be performed correctly. (7) Combination with MELSECNET/H QJ71PB92D can be mounted on the MELSECNET/H administrative station and general stations, but cannot be mounted on MELSECNET/H remote stations

19 2 SYSTEM CONFIGURATION 2.4 Confirmation of Serial No. The serial Nos. of QCPUs (Q mode) capable of using the separation prevention function of QJ71PB92D and their confirmation method are shown below. (1) Serial Nos. of QCPUs (Q mode) capable of using the separation prevention function Products with serial No and subsequent (2) Confirmation of serial Nos. of Q-series PLC (a) When confirming on the Rating indication plate on the side surface of the module The serial No. of the applicable module is given in SERIAL column of the Rating indication plate. Serial No. (Upper 5 digits) Function version Conformed standard (b) When confirming on GX Developer The method for confirming the serial No. of the applicable module on GX Developer is shown for the case using GX Developer Version 6. The serial No. appears in the [Product information list] or [Module detail information] window of GX Developer. The method of confirming the serial No. on the Production information list window is shown below. [Start Procedure] "Diagnosis" "System monitor" "Product information list" [Serial No.] The serial No. of the applicable module appears in the Serial No. field

20 3 SPECIFICATIONS 3. SPECIFICATIONS 3.1 Performance Specifications This section explains the QJ71PB92D the general specifications, performance specifications, and transmission specifications. For the general specifications of the QJ71PB92D, refer to the user s manual for the CPU module to be used. Item Specifications Model QJ71PB92D PROFIBUS-DP station type Master station (class 1) Electrical standards and characteristics Complies with EIA-RS485 Medium Shielded twisted cable Network configuration Bus (however, tree type when a repeater is used) Data link method Token passing method (Master-to-master) Polling method (Master-to-slave) Transmission encoding method NRZ Transmission speed Transmission distance [m/segment] Maximum transmission distance when 3 repeaters are used 9.6 [kbps] 19.2 [kbps] Transmission speed/maximum [kbps] transmission distance [kbps] [kbps] [Mbps] [Mbps] 6 [Mbps] [Mbps] Maximum number of repeaters/network 3 units 2 Maximum number of stations/segment 32 stations 3 Maximum number of slave stations/master station 60 slaves 3 Transmission specifications Number of connection nodes (number of 32, 62 (1), 92 (2), 126 (3) 3 repeaters) Transmittable data 32 bytes/1 station (Normal service mode) 244 bytes/1 station (Extended service mode) Number of occupied I/O 32 points (I/O assignment : 32 Intelligent points) 5VDC internal current consumption 0.57A External dimensions 105(H) 27.4(W) 975(D) [mm] Weight 1 Transmission speed control within +/- 0.3% (PROFIBUS part 1) 0.15kg 2 Distance that the transmission distance can be expanded by (m/network) using repeaters Maximum transmission distance (m/network) = (number of repeaters + 1) transmission distance (m/segment) 3 When a slave used is greater than 32 bytes in the maximum data length of the error information, the maximum number of stations, the maximum number of slave stations and the number of connection nodes may be less than the above values. This is because the maximum data length of the slave station error information that the QJ71PB92D can receive varies with the minimum station number and maximum station number of the slave stations set in the parameters. Refer to Section for details. For the noise immunity, withstand voltage, insulation resistance and others in the PLC system using this module, refer to the power supply module specifications given in the used CPU module user s manual

21 3 SPECIFICATIONS 3.2 Network Configuration Basic configuration 3 1) Equipment types Class 1 master GX Configurator-DP Slave Repeater 2) Number of units that can be connected to the entire network (when repeaters are used) Master+slave 126 units 3) Number that can be connected for 1 segment Master+slave+repeaters 32 units 4) Communications can be conducted via a maximum of 3 repeaters from an arbitrary master or arbitrary slave to an arbitrary master or arbitrary slave (Not 3 units in the entire network). 5) The maximum number of slaves that can be connected to 1 QJ71PB92D is 60 stations. CPU module Master (class 1) QJ71PB92D GX Configurator-DP Slave Slave Slave The PROFIBUS-DP cable is provided by the user

22 3 SPECIFICATIONS Applicable configuration 1) When 1 master (class 1) station is connected CPU mlodule Master (class 1) QJ71PB92D GX Configurator-DP Slave Slave Slave Station No. 1 Station No. 2 Station No. 31 A maximum of 32 stations can be connected to 1 segment. 2) When 1 master (class 1) station and 1 repeater are connected CPU module Master (class 1) QJ71PB92D GX Configurator-DP Slave Station No. 1 Slave Station No. 2 Slave Station No. 30 Repeater Slave Station No. 31 Slave Station No. 32 Slave Station No. 60 In the above configuration a maximum of 60 slaves can be connected

23 3 SPECIFICATIONS 3) When 1 master (class 1) station and 3 repeaters are connected CPU module Master (class 1) QJ71PB92D GX Configurator-DP Slave Station No. 1 Slave Station No. 2 Slave Station No. 18 Repeater Repeater Slave Station No. 19 Slave Station No. 35 Slave Station No. 36 Slave Station No. 44 Repeater Slave Station No. 45 Slave Station No. 60 In the above configuration a maximum of 60 slaves can be connected. The difference between this configuration and the one in 2) is that the possible communication distance can be extended

24 3 SPECIFICATIONS 4) When 126 master (class 1) and slave stations are connected (When 60 or more slaves are connected) 1st master (class 1) CPU module 2nd master (class 1) 3rd master (class 1) Slave Station No. 1 Slave Station No. 14 Slave Station No. 15 Slave Station No. 18 Repeater Repeater Slave Station No. 19 Slave Station No. 56 Repeater Slave Station No. 57 Slave Station No. 85 Repeater Slave Station No. 86 Slave Station No. 107 Slave Station No. 108 Slave Station No. 123 : This slave is controlled by the 1st master (class 1). : This slave is controlled by the 2nd master (class 1). : This slave is controlled by the 3rd master (class 1). In the above configuration a maximum of 123 slave stations can be connected

25 3 SPECIFICATIONS POINT In configurations that use multiple master stations (multimaster configuration), when reconnecting a cable after disconnecting a PROFIBUS cable for 1 master that is exchanging data at a low baud rate, the communications of the master for which the cable is not disconnected could stop and the slave output could be turned off. To prevent this, the master PROFIBUS cable must be secured with a screw. In addition, there is a high possibility that the above phenomena can be avoided if care is taken with the following points when configuring a system. (1) Set the slave watchdog timer setting value to larger than (TTr G)/BR. However, TTr : Target token rotation time (Unit: Bit Time) G : Gap update factor BR : Baud rate (Unit: bps) (2) Use a high baud rate. (3) The HSA (Highest Station Address) value is made to match the maximum station No. that is actually connected

26 3 SPECIFICATIONS Number of connectable slaves Please calculate the number of the slave which can be connected under the following (1) and (2) conditions. (1) Restrictions on maximum data length of slave station error information The maximum data length of the slave station error information that the QJ71PB92D can receive varies with the minimum station number and maximum station number of the slave stations set in the parameters, and can be calculated using the following expression. Maximum data length of acceptable error information [bytes] = Min N - 10, 244 N = Min((a - b + 1) 5, 300) a: Maximum station number of slave station b: Minimum station number of slave station Min(a, b) = A or B, whichever is smaller If the maximum data length (Max_Diag_Data_Len) of the error information described in the GSD file of a slave station is greater than the value calculated by the above expression, normal communication may not be made with that slave station. If normal communication cannot be made, try the following methods: (a) Set the station numbers of the slave stations with no unused numbers in between. (b) Make setting on the slave station side to shorten the maximum data length of the error information. (If possible) (c) Using two or more QJ71PB92D's, reduce the number of slave stations per module. (2) Restrictions on parameter data length of slave station The parameter size which can be set in QJ71PB92D should meet the following formula. Note that the system construction which does not meet the following formula causes the error of 1302H. n 5 + (number of parameter blocks of each slave station) 128 i = 1 n = number of slave stations (number of parameter blocks of each slave station) = sum total of the numbers of parameter blocks calculated by each slave station The number of parameter blocks for each station is decided by the parameter size of the station as follows. Parameter size of each slave station Number of blocks of each slave station 246 bytes or less 1 block 247 to 480 bytes 4 blocks 481 to 720 bytes 5 blocks 721 to 762 bytes 6 blocks

27 3 SPECIFICATIONS Calculate the parameter size of each slave station using the following formula. Parameter size of each slave station = 31 + (User_Param data length) + (configuration data length) + (a) User_Param data length The value of User_Prm_Data usage on the screen displayed when Select Modules is selected on the slave station setting screen of GX Configurator- DP. (b) Configuration data length The value differs depending on the slave station type as shown below. 1) Module type slave station Sum of the number of Module set values, which are described in the GSD file of the slave station, of the modules registered to the [slot] Installed Module list. (Example) [slot] Installed Module registration status of GX Configurator-DP SD file description Module="1 Word In,con word" 0x50 Module="1 Word Out,con word" 0x60 Number of set values is "1" Number of set values is "1" Configuration data length is "2". 2) Block type slave station Number of Module set values described in the GSD file of the slave station. (Example) GSD file description Module="1 Byte Out,3 Byte In" 0x20,0x12 As the number of set values is "2", the configuration data length is "2". (c) (constant) = 2: When the slave station has only input or output = 4: When the slave station has both input and output

28 3 SPECIFICATIONS (example) When the system is constructed using only the stave stations with 520 bytes parameter, QJ71PB92D can connect with up to the following number of the slave stations. When the parameter size is 520 bytes, the number of the parameter block is five blocks. 5 + (5 n) 128 : n = number of slaves n = n = 24 The calculation mentioned above tells that QJ71PB92D can connect with up to 24 slave stations. Therefore, when 25 slave bureau or more are set by the parameter, QJ71PB92D detects the error of 1302H

29 3 SPECIFICATIONS 3.3 I/O Signal I/O signal list The I/O signal configuration used in the QJ71PB92D and the data communications with the PLC CPU are described below. Signal direction: QJ71PB92D PLC CPU Signal direction: PLC CPU QJ71PB92D Device No. Description Device No. Description X00 Exchange start end signal Y00 Exchange start request signal X01 Communication trouble detection signal Y01 Communication trouble detection signal reset X02 Communication trouble area clear end signal Y02 Communication trouble area clear request signal X03 Not usable Y03 Communication trouble area type selection X04 Global control end signal Y04 Global control request signal X05 Global control error end Y05 X06 X0F X10 Operation mode signal Not usable Y0B Not usable Y0C Dedicated instruction valid signal Y0D Startup request signal Y0E Y10 Not usable X11 Operation mode change completion signal Y11 Operation mode change request signal X12 Y12 Not usable X1A X1B Communication READY signal X1C Not usable X1D Module READY signal X1E Not usable X1F Watchdog timer error signal Y1F Not usable POINT If a device which is not usable is accidentally turned on and off in the sequence program, it cannot guarantee as the QJ71PB92D function

30 3 SPECIFICATIONS I/O signal detail description (1) Exchange start request signal (Y00), exchange start end signal (X00) (a) After the exchange start request signal (Y00) is turned on by the sequence program the exchange start end signal (X00) is turned on when cyclic exchange starts. (b) The exchange start end signal (X00) turns off in either of the following cases. When the exchange start request signal (Y00) is turned off When the parameters are written from GX Configurator-DP to the QJ71PB92D Maximum 200 ms Exchange start request signal (Y00) Exchange start end signal (X00) Exchange start request Exchange start end Exchange (c) An interlock is used for FROM/TO of the I/O data. (d) Before the exchange start request signal is turned on the output data initial value must be written to the buffer memory. (2) Communication trouble detection signal (X01), communication trouble detection signal reset (Y01) (a) The communication trouble detection signal (X01) is turned on when a communication trouble occurs. At the same time the RSP ERR.'s LED turns on. At this time the error code and detailed data are stored in the buffer memory communication trouble area. (b) The communication trouble detection signal (X01) is turned off when the communication trouble detection signal reset signal (Y01) is turned on from the sequence program or when communication failure is all resolved. At this time, the RSP ERR. LED turns off. (c) The communication trouble detection signal reset (Y01) is turned off by the sequence program after it has been confirmed that the communication trouble detection signal (X01) has been turned off. (d) The following sequence is used. Communication trouble detection signal reset (Y01) Communication trouble detection signal (X01) FROM/TO Trouble detection reset Trouble detection FROM The error code is read from the buffer memory to the PLC CPU

31 3 SPECIFICATIONS (3) Communication trouble area clear request (Y02), communication trouble area clear end (X02) (a) The communication trouble area clear request (Y02) is turned on by the sequence program when all of the communication trouble areas and extension trouble areas are cleared. (b) The communication trouble clear end signal (X02) is turned on after all of the communication trouble area and extension trouble areas are cleared by turning on the communication trouble area clear request signal (Y02). (c) The communication trouble area clear request (Y02) is turned off by the sequence program after it has been confirmed that the communication trouble area clear end signal (X02) has been turned on. (e) When the communication trouble area clear request signal (Y02) is turned off the communication trouble area clear end signal is turned off. (d) A sequence like the one below is used. Communication trouble area clear request (Y02) Clear request Communication troublev area clear end (X02) Clear end (4) Global control request signal (Y04), global control end signal (X04) (a) The global control end signal (X04) is turned on after service processing has ended when the global control request signal (Y04) is turned on by the sequence program. (b) The global control request signal (Y04) is turned off by the sequence program after it has been confirmed that the global control service end signal (X04) has turned on. (c) When the global control request signal (Y04) is turned off the global control end signal (X04) turns off. (d) The global control request signal (Y04) cannot be received if the exchange starting (X00) is not on. If Y04 is turned on when X00 is off then both X04 and X05 will turn on. (e) A sequence like the one below is used. Exchange start end signal (X00) Global control request signal (Y04) Global control end signal (X04) X00 Global control request Global control end TO Output data write

32 3 SPECIFICATIONS (5) Global control error end signal (X05) (a) If global control is requested when exchange start (X00) is not on then global control error end (X05) and the global control service end signal (X04) will turn on at the same time. (b) The slave I/O is not held/deleted when the global control error end signal (X05) is on. Global control request signal (Y04) Global control end signal (X04) Global control error end signal (X05) Global control request Global control end Global control error end (6) Operation mode signal (X10) Indicates whether the current operation mode is the parameter setting mode or not. ON: Parameter setting mode OFF: Normal service mode/extended service mode (7) Operation mode change request signal (Y11), operation mode change completion signal (X11) Used to change the operation mode without resetting the CPU module. (a) Operation mode change request signal (Y11) OFF ON: Requests the operation mode to be switched to the one specified in the operation mode change request area (address 2255/8CFh) of the buffer memory. ON OFF: Turns off X11. (b) Operation mode change completion signal (X11) Turns on when the result is stored into the operation mode change result area (address 2256/8D0h) of the buffer memory. This signal also turns on on normal or abnormal completion of an operation mode change. This signal turns off when Y11 turns from ON to OFF. Exchange start request signal: Y00 Operation mode change request signal: Y11 Operation mode change completion signal: X11 TO instruction FROM instruction Sets the operation mode in the "operation mode change request area". Confirms the result in the "operation mode change result area" and "current operation mode". IMPORTANT When the operation mode change request signal (Y11) is on, do not turn off the power or reset the CPU module during registration of the operation mode to the flash ROM. To do so may result in repair of the QJ71PB92D. Turn the power off or reset the CPU module after the operation mode change completion signal (X11) has turned on

33 3 SPECIFICATIONS (8) Communication READY signal (X1B) (a) This is turned on when the station enters the exchange start possible state after the QJ71PB92D has started up and the module READY signal (X1D) has turned on. (Only during the normal service mode (MODE O) and extended service mode (MODE E).) (b) This turns off when a exchange continuation impossible error occurs. (c) The exchange start request signal (Y00) is used as an interlock when turned on by the sequence program. (9) Module READY signal (X1D) (a) This is turned on when the QJ71PB92D is started up. regardless of the operation mode at the time of starting. (b) This is turned of when the QJ71PB92D goes down. (10) Watchdog timer error end (X0D) (a) This turns on when a Watchdog timer error occurs. (b) The signal will not be turned off until the module is reset or the power of QJ71PB92D is turned ON. (11) Communication trouble area type selection (Y03) (a) This signal is used to select the communication trouble area type (ring type or fixed type). ON: Fixed type OFF: Ring type (b) This signal becomes valid when the exchange start or communication trouble area clear request (Y02) is ON. Communication trouble area type selection (Y03) Fixed type selection Ring type selection (Becomes valid) Initial type Exchange start or communication trouble area clear request (Y02) on (12) Dedicated instruction valid signal (Y0C) (a) This signal is used when the dedicated instruction for separation prevention is validated. ON: Read/Write by dedicated instruction is validated. OFF: Read/Write by dedicated instruction is invalidated. (b) Keep the signal turned ON while the dedicated instruction is being used. (13) Restart request signal (Y0D) (a) When the QJ71PB92D goes down for some reason (when the FAULT LED turns on and X1D is off) then turning Y0D from off to on to off again will make it possible to restart the QJ71PB92D. (b) The same state will be entered if after start up the power supply is turned off and then on again

34 3 SPECIFICATIONS 3.4 Buffer Memory List Buffer memory/configuration The configuration of the buffer memory used to receive and send data with the QJ71PB92D and the PLC CPU is described below. Buffer memory address decimal (Hexadecimal) Area name Description 0 (0H) Input area This is the area that stores the input data from the slave (3BFH) (3C0H) Output area This is the area that stores the output data to the slave (77FH) (780H) Address information area This is the area that shows the slave address and I/O data length (7F7H) 2040 (7F8H) Communication trouble area This is the area that shows the trouble information that occurred during communication (81FH) 2080 (820H) Slave error information cancel area This is the area that sets the data that masks the slave trouble information (821H) Global control area This is the global control function hold/cancel selection area (822H) Not usable 2083 (823H) Time out time setting area (Closed to users This is used to set the time out time when an exchange start/stop is executed. because this is a debugging function.) 2084 (824H) Trouble no information time setting area This is used to set the time that does not inform the communication trouble after the exchange start (825H) Not usable 2095 (82FH) 2096 (830H) Expansion communication trouble area This area shows the expansion information of the trouble information which is occurred during the communication (83EH) 2111 (83FH) Not usable 2112 (840H) Slave status area This is the area that shows the status information of each slave (844H) (845H) (84FH) (850H) (8C7H) (8C8H) (8CDH) Not usable Input/Output start address area (Extended service mode only) Not usable This is the area that shows the addresses to start the input area and output area of each slave (8CEH) Current operation mode area This area indicates the operation mode of the QJ71PB92D when it has started up (8CFH) Operation mode change request area In this area, set the operation mode of the QJ71PB92D which you want to choose (8D0H) Operation mode change result area This area indicates the execution result of the operation mode change request (8D1H) Local station address display area Area in which the station address of the local station is stored (8D2H) Self-diagnosis status code area Area in which the code indicating the status of the self-diagnosis during the execution of the diagnosis is stored (8D3H) Not usable 3775 (EBFH) POINT Don't read and write to the buffer memory which is not usable. If you perform it, it cannot guarantee as the QJ71PB92D function

35 3 SPECIFICATIONS Buffer memory detailed description (1) INPUT area (Buffer memory address: 0 (0H) to 959 (3BFH)) Either the normal service mode (Mode 0) or extended service mode (Mode E) can be selected using GX Configurator-DP. (a) Normal service mode (MODE 0) This is the area that stores the input data from the slave station. This area is fixed to an allocation of 32 bytes (16 words) per station for a total of 60 stations worth. This input area configuration is as follows. Example : When the input data length for the first station is set to 29 bytes and that for the second station to 32 bytes Buffer memory 0(0H) address decimal (Hexadecimal) 15(FH) 16(10H) 31(1FH) 1st station input data 2nd station input data Buffer memory address decimal (Hexadecimal) 0(0H) 1(1H) 14(EH) b15 (Upper byte) 1st station 2nd byte 1st station 4th byte (Lower byte) b0 1st station 1st byte 1st station 3rd byte 1st station 29th byte 1 15(FH) n th station input data 16(10H) 2nd station 2nd byte 2nd station 1st byte 17(11H) 2nd station 4th byte 2nd station 3rd byte 944(3B0H) 959(3BFH) 60th station input data 30(1EH) 2nd station 30th byte 2nd station 29th byte 1 31(1FH) 2nd station 32nd byte 2nd station 31st byte b15 b0 : Free area (00H) 1 Since the data area is fixed to 32 bytes, all unused areas will become free. POINT The input data of the slave station, which was disabled from communication during normal communication and whose corresponding bit of the communication status area 1 turned ON (1), is not stored into the input area of the QJ71PB92D. In the input area of the corresponding slave station, the data before communication failure is held. 1: Indicates the area of buffer memory addresses 2113 (841H) to 2116 (844 H) in the slave status area

36 3 SPECIFICATIONS (b) Extended service mode (MODE E) This is the area that stores the input data from the slave station. In this area, the data length (in byte units) for each station is assigned in variable length according to the parameter file set in the GX Configrator-DP. The data length can be set in the range of 0 to 244 bytes. Number of stations that can be set will vary in the range of 1 to 60, depending on the specified data length. For example, seven stations can be set if the data length for each station is 244 bytes, and 60 stations if the data length is 32 bytes. Example : When the input data length for the first station is set to 23 bytes and that for the second station to 7 bytes Buffer memory address decimal (Hexadecimal) 0(0H) 11(BH) 1st station input data Buffer memory address decimal (Hexadecimal) 0(0H) 1(1H) b15 (Upper byte) 1st station 2nd byte 1st station 4th byte (Lower byte) b0 1st station 1st byte 1st station 3rd byte 12(CH) 15(FH) 2nd station input data 10(AH) 1st station 22nd byte 1st station 21st byte n th station input data 11(BH) 12(CH) 2nd station 2nd byte 1st station 23rd byte 2nd station 1st byte 2 13(DH) 2nd station 4th byte 2nd station 3rd byte 14(EH) 2nd station 6th byte 2nd station 5th byte 60th station input data 15(FH) 2nd station 7th byte b15 b0 : Free area (00H) 2 When the data lenghth is set to an odd number of bytes, the last upper byte becomes a free area and data for the next station is assugned from the next address. POINT The input data of the slave station, which was disabled from communication during normal communication and whose corresponding bit of the communication status area 1 turned ON (1), is not stored into the input area of the QJ71PB92D. In the input area of the corresponding slave station, the data before communication failure is held. 1: Indicates the area of buffer memory addresses 2113 (841H) to 2116 (844 H) in the slave status area

37 3 SPECIFICATIONS (2) OUTPUT area (Buffer memory address: 960 (3C0H) to 1919 (77FH)) Either the normal service mode (Mode 0) or extended service mode (Mode E) can be selected using GX Configurator-DP. (a) Normal service mode (MODE 0) This is the area that stores the output data to the slave station. This area is fixed to an allocation of 32 bytes (16 words) per station for a total of 60 stations worth. This output area configuration is as follows. Example : When the output data length for the first station is set to 1 bytes and that for the second station to 3 bytes Buffer memory address decimal (Hexadecimal) 960(3C0H) 975(3CFH) 976(3D0H) 991(3DFH) 1st station output data 2nd station output data Buffer memory address decimal (Hexadecimal) b15 960(3C0H) 961(3C1H) (Upper byte) (Lower byte) 1st station 1st byte b (3CEH) 975(3CFH) n th station output data 976(3D0H) 2nd station 2nd byte 2nd station 1st byte 977(3D1H) 2nd station 3rd byte (770H) 1919(77FH) 60th station output data 991(3DFH) b15 : Free area (00H) 1 Since the data area is fixed to 32 bytes, all unused areas will become free. b

38 3 SPECIFICATIONS (b) Extended service mode (MODE E) This is the area that stores the output data to the slave station. In this area, the data length (in byte units) for each station is assigned in variable length according to the parameter file set in the GX Configrator-DP. The data length can be set in the range of 0 to 244 bytes. Number of stations that can be set will vary in the range of 1 to 60, depending on the specified data length. For example, seven stations can be set if the data length for each station is 244 bytes, and 60 stations if the data length is 32 bytes. Example : When the output data length for the first station is set to 19 bytes and that for the second station to 5 bytes Buffer memory address demical (Hexadecimal) 960(3C0H) 969(3C9H) 1st station output data Buffer memory address demical (Hexadecimal) b15 960(3C0H) 961(3C1H) (Upper byte) 1st station 2nd byte 1st station 4th byte (Lower byte) b0 1st station 1st byte 1st station 3rd byte 970(3CAH) 972(3CCH) 2nd station output data 968(3C8H) 1st station 18th byte 1st station 17th byte n th station output data 969(3C9H) 970(3CAH) 2nd station 2nd byte 1st station 19th byte 2nd station 1st byte 2 971(3CBH) 2nd station 4th byte 2nd station 3rd byte 60th station output data 972(3CCH) 2nd station 5th byte b15 b0 : Free area (00H) 2 When the data lenghth is set to an odd number of bytes, the last upper byte becomes a free area and data for the next station is assugned from the next address

39 3 SPECIFICATIONS (3) Address information area (Buffer memory address: 1920 (780H) to 2039 (7F7H)) This area shows the station address, input byte length, and output byte length for each slave station. This allocation is set by the GX Configrator-DP. The station addresses for the 1st through the 60th stations are stored in the order of registration in the GX Configrator-DP. (Station addresses: 1 to 126, do not need to be sequential numbers.) The address information area configuration is shown below. For details refer to Section (4). Buffer memory address demical (Hexadecimal) 1920(780H) 1921(781H) 1922(782H) Station address of 1st station 1st station input byte length 1st station output byte length Station address of 2nd station 1923(783H) 2nd station input byte length 2nd station output byte length Station address of n station n th station input byte length n th station output byte length 2036(7F4H) 2037(7F5H) 2038(7F6H) Station address of 59th station 59th station input byte length 59th station output byte length Station address of 60th station 2039(7F7H) 60th station input byte length 60th station output byte length (a) The station address of unallocated stations is FFFFH, and the I/O byte is FFH. (b) When the I/O byte length of allocated stations is 0, a 0 is stored for the byte length. (c) The n does not show the station address but represents a number (the nth number) used for the input/output area

40 3 SPECIFICATIONS INPUT (4) Example address information area, INPUT area, and OUTPUT area The QJ71PB92D reads the slave station address and I/O byte length set by the parameter file which is set by the GX Configrator-DP and stores these in the buffer memory address information area. With the QJ71PB92D, I/O areas are assigned to each slave station based on the I/O byte length information in the address information area, and each I/O data will be stored in the corresponding buffer memory area (MODE E). Example : At extended service mode Buffer memory Buffer memory address demical INPUT/OUTPUT area address demical Address information area (Hexadecimal) b15 b0 (Hexadecimal) b15 b0 0(0H) 1st station 2nd input byte 1st station1st input byte 1(1H) 1st station 3rd input byte 2(2H) 2nd station 2nd input byte 2nd station 1st input byte 3(3H) 2nd station 4th input byte 2nd station 3rd input byte 4(4H) 2nd station 6th input byte 2nd station 5th input byte 5(5H) 2nd station 7th input byte 6(6H) 1920(780H) 1921(781H) 1922(782H) 1923(783H) Station address (FFFFH if not assigned) 2 Input byte length (FFH if not assigned) 3 Output byte length (FFH if not assigned) 1, 2 and 3 are also set in a reserved station (3BFH) 960(3C0H) 2nd station 2nd output byte 2nd station 1st output byte OUTPUT 961(3C1H) 962(3C2H) 963(3C3H) 2nd station 4th output byte 2nd station 3rd output byte 2nd station 5th output byte 4 : Vacant area (The free areas in the INPUT area are initialized with [00H].) 1919(77FH) 4 Since output from the first station has a byte length of 0, no area is allocated in the OUTPUT area. CPU module QJ71PB92D PROFIBUS-DP network Slave Station address : 10 Input data length : 7 byte Output data length : 5 byte Slave Station address : 5 Input data length : 3 byte Output data length : 0 byte

41 3 SPECIFICATIONS (5) Communication trouble area (Buffer memory address: 2040 (7F8H) to 2079 (81FH)) When some kind of trouble occurs during communication the QJ71PB92D stores the contents of the trouble in this area. Fixed type or ring type can be selected for this area by turning the communication trouble area type selection (Y03) on or off (refer to Section (11)). As shown in the following diagram, a total of 8 pieces of trouble information that consist of the trouble code, detailed data length, and detailed data can be stored in the basic configuration regardless of whether for fixed or ring data. Ring type data is stored in order from the header with the header always being the latest trouble information. With fixed type data, when 8 pieces of trouble information are stored the areas 2 to 8 (data 1 to 7) are fixed, so when the next new trouble occurs only header area 1 (data 8) is updated. All trouble information for either type can be cleared by turning on the communication trouble detection signal reset (X01). Communication trouble area clear request (Y02) is on, the contents of the communication trouble area are hold though the communication trouble detection signal (X01) turns off. The communication trouble area configuration is as follows. (a) Communication trouble area configuration Buffer memory address demical (Hexadecimal) 2040(7F8H) Trouble information area (7FCH) 2045(7FDH) Trouble information area (801H) 2050(802H) Trouble information area (806H) Buffer memory address demical (Hexadecimal) 2040(7F8H) 2041(7F9H) 2042(7FAH) 2043(7FBH) 2044(7FCH) Error code (refer to the next page.) Detailed data length (0 to 3) Detailed data 1 Detailed data 2 Detailed data (81BH) 2079(81FH) Trouble information area 8 Ring type Trouble information area 1 Trouble information area 2 Data 1 Data 2 Data 8 Data 9 Data 1 Data 7 Data 8 Trouble information area 8 Data 1 Data 2 Fixed type Trouble information area 1 Trouble information area 2 Data 1 Data 2 Data 1 Data 8 Data 7 Data 9 Data 7 Trouble information area 8 Data 1 Data

42 3 SPECIFICATIONS Error Code 0200H Data Detailed data length (c) Ref. (c) Ref. (c) Ref. (b) Error codes The error codes are shown below. (c) Ref. Description (c)ref. 1211H 1 03h The slave address specified in the parameter is the same as that of the master. This error occurs immediately after the power supply is turned on or the CPU is reset. Even though this error is occurring, if the exchange start (Y00) is on then error of error code 3000H will occur, the FAULT LED will turn on, and operation will stop. 1300H 1 Contents ref. Contents ref. Not even 1 active slave station is set in the parameter. When this error occurs the detailed data is set to: Detailed data 1: Number of slaves set in the parameter. This error occurs immediately after the power supply is turned on or the CPU is reset. Even though this error is occurring, if the exchange Communication state User processing (c)ref. 1) Set 1 or more active slaves in the parameter. 2) When the FAULT LED is turned on, reset is enabled by turning OFF ON OFF the Y0D start (Y00) is on then error of error code 3000H will occur, the FAULT LED will turn on, and operation will stop. 1301H 1 Ignored The parameter area space is insufficient. Reduce the number of connected stations or change the slave station type. 3000H 1 Ignored 1) When the above errors 1211 H or 1300 H have For 1) occurred before this error: Refer to the above Refer to errors 1211 H, 1300 H above H, 1300 H 2) Otherwise errors. An unexpected error has occurred. For 2) Contact the nearest Mitsubishi Electric branch office or dealer. : Exchange stops after the error occurs. : Exchange continues

43 3 SPECIFICATIONS (c) When the trouble code = 0200H For a slave trouble information occurrence (error code = 0200H), the slave trouble information is stored in the detailed data. The communication trouble area configuration for this case is shown below. In addition, the expansion communication trouble information is stored in buffer memory 2096 to 2110 for only the latest trouble information of the error code = 0200H trouble information. For information regarding the expansion communication trouble information refer to Section (6). Error code = slave trouble information occurrence Detailed data length = 3 Detailed data 1 Master address ( 1) Slave address ( 2) Detailed data 2 Trouble information Detailed data 3 Slave ID ( 3) 1 The station address of the master station that controls the slave station in which this trouble information occurred is stored. However, FFH is stored when the trouble information shows the exchange with the slave is failed. 2 The station address of the slave station in which this trouble information occurred is stored. 3 Individual slave inherent ID No. from the PNO is stored. However, FFH is stored for trouble information that shows that the exchange with the slave failed. The trouble information is shown in a 16-bit bit string, and the bits that correspond to the respective trouble occurrences are set. A description of the error information is given below. bit Description Communication state Processing 15 Controlled by another master. Multiple masters are trying to communicate with the same slave, so recheck the parameter. 14 The parameter transmitted by the master is Check the parameter. incorrect. Setting station Master 13 The response from the slave is incorrect. Check the slave or network status. Master 12 The function requested by the master is not Check the slave specifications. Especially if global control is Slave supported. supported. 11 Expansion trouble information exists. Check the slave status. (refer to Section (6).) Master 10 The I/O byte size parameter received from the Check the slave parameter. Slave master does not match that of the slave. 9 The slave is not ready to exchange. This trouble information will always occur at exchange start, Slave so it can be ignored. If this trouble occurs during exchange, check the slave status and communication circuit. 8 Exchange with the slave cannot be Check the slave status and communication circuit. And Master conducted. check the parameter. 7 Separated from the cyclic exchange by the This trouble information will always occur at exchange start, Master parameter setting. so it can be ignored. Check if the parameter on the network was changed by a class 2 master. 6 0 (reserved) Slave 5 The slave has entered the SYNC mode. (Normal operation) Slave 4 The slave has entered the FREEZE mode. (Normal operation) Slave 3 Watchdog monitoring is being conducted in (Normal operation) Slave the slave. 2 0 (fixed) Slave 1 Diagnostic data read request. Check the slave statue. Slave 0 Parameter allocation request from a slave. This error information will always occur at exchange start, so it can be ignored. If this error occurs during exchange, check the slave status and communication circuit. Slave Slave : Exchange continues even if trouble occurs

44 3 SPECIFICATIONS (6) Expansion communication trouble area (Buffer memory address: 2096 (830H) to 2110 (83EH)) This area shows the latest expansion trouble information for only one of the latest expansion trouble information in the error code 0200H error information stored in buffer memory 2040 to 2079 communication error area (Refer to Section (5)). Communication trouble area (When fixed buffer is selected.) Area 1 Area 2 Data 10 Data 7 No error code=0200h expansion trouble information (trouble information bit 11 = 0) Buffer memory address demical (Hexadecimal) 2096 (830H) 2097 (831H) Expansion trouble information area Data 6 Data 5 Data 4 Data 3 Data 2 (Latest data) There is error code= 0200H expansion trouble information (trouble information bit 11 = 1) Area 8 Data (83EH) (a) Buffer Memory 2096 (830H) The latest expansion communication trouble information length stored from buffer memory 2098 is stored as a byte length unit. Buffer memory address demical (Hexadecimal) Expansion trouble information area 9096 (830H) (831H) 9098 (832H) 21 bytes = 10 words + 1 byte 2110 (83EH)

45 3 SPECIFICATIONS (b) Buffer memory 2097 (831H) Only bit 7 is valid. Other bit is fixed in 0. Bit 7 is turned on when the slave sends expansion trouble information that is 27 bytes or more. MSB LSB Bit position fixed 0 fixed (c) Buffer memory 2098 to 2110 (832H to 83EH) The following informations are stored in this area: Device related trouble information This area stores the slave station inherent self-diagnostic information that is not set by the PROFIBUS-DP standards. Identifier related trouble information For module type slave stations, whether or not a module error has occurred is stored as bit information. Channel related trouble information For module type slave station, this stores the, error information of all modules outputting an error. Buffer memory address demical (Hexadecimal) 1) Device Related trouble information This stores the slave module inherent trouble information that is not set by the PROFIBUS-DP standards. The device related trouble can be divided by header and trouble information. This area stores a 2 bit value that is the device related trouble information in the header, including the header (1 byte), and the device related trouble information for this area (832H) (2nd byte) Header (1st byte) Header: Bit position MSB LSB (833H) (4th byte) (3rd byte) Device area length 2 to 63 in byte units Bits 6 and 7 are set to

46 3 SPECIFICATIONS 2) Identifier related trouble information For module type slave stations, this stores as bit information whether or not a module is outputting an error. The identifier related trouble information can be divided into header and trouble information. This area stores a 2 bit value that is the identifier related trouble information in the header, including the header (1 byte), and the device related trouble information for this area. Buffer memory (End of device area) (2nd byte) Header (1st byte) Header: MSB LSB Bit position (4th byte) (3rd byte) Identifier area length 2 to 63 in byte units Bits 6 and 7 are set as 01. Bit position: 2nd byte 3rd byte MSB LSB When this bit is 1, the 0th module has an error. When this bit is 1, the 7th module has an error

47 3 SPECIFICATIONS 3) Channel related trouble information When a module type slave station, this area stores the trouble information for each module that is outputting an error. This area does not have a header and stores this information at the end of the identifier related trouble information. Each channel trouble information consists of an identifier No., channel No., and error type of 3 bytes. Buffer memory (End of identifier area) 1st byte: Identifier No. (2nd byte) channel No.1 (1st byte) identifier No.1 Bit position MSB LSB (4th byte) identifier No.2 (3rd byte) trouble type 1 (6th byte) trouble type 2 (5th byte) channel No.2 Identifier Nos. 0 to 63 bits 6 and 7 are set to 10. 2nd byte: Channel No. MSB LSB Bit position Channel number 0 to 63 Input/output 00 = Reserved 01 = Input 10 = Output 11 = Input/output 3rd byte: Trouble type MSB LSB Bit position Channel type 000 = Reserved 001 = Bit 010 = 2 bit 011 = 4 bit 100 = byte 101 = Word 110 = 2 words 111 = Reserved Error type: 0 Reserved 1 Short circuit 2 Voltage too low 3 Voltage too high 4 Overload 5 Temperature too high 6 Disconnected wire 7 Upper limit exceeded 8 Lower limit exceeded 9 Error 10 Reserved 15 Reserved 16 Manufacturer 31 Manufacturer

48 3 SPECIFICATIONS 4) Identifier No., channel No. The slave identifier No. and channel No. are discussed below. The identifier No. is the No. that is attached from the header of each slave module. Each module can have multiple channels. Refer to the each slave specifications regarding to the channel numbering method. Slave 16 point DI byte 2 channels 32 point DO byte 4 channels 32 point DO 2 words 1 channels PROFIBUS-DP network Slot Identifier Channel No. No. No ,1 0,1,2,

49 3 SPECIFICATIONS (7) Example expansion communication trouble area Buffer memory address demical (Hexadecimal) 2096(830H) Expansion communication trouble information length (byte length) 2098(832H) 00 Header (length 4) Device : Vendor independent trouble information Header (length 4) Identifier Channel Identifier Nos. 0 and 2 have trouble information. Identifier No.0 and channel No. (slot) 1 correspond, channel type: byte, error: overload. Identifier No.2 and channel No. (Slot) 0 correspond, channel type: 2 words, error: exceeds high limit value Slave 16 point DI byte 2 channels 32 point DO byte 4 channels 32 point DO 2 word 1 channels PROFIBUS-DP network Slot Identifier Channel No. No. No ,1 0,1,2,

50 3 SPECIFICATIONS (8) Slave trouble information cancel area (Buffer memory address: 2080 (820H)) This stores the value that masks the slave trouble information (error code = 0200H detailed data 2). Even if the slave trouble information corresponding to this area bit occurs the slave trouble information detection signal (X01) and RSP ERR. LED do not turn on. In addition, the trouble information is not stored in the trouble information area. The default value is 02B9H. This 02B9H trouble information also occurs during normal situations and is masked. This value can only be changed when exchange start is off. (When on, changes are ignored.) Buffer memory address demical (Hexadecimal) b15 b0 2080(820H) Slave trouble information mask value To mask this trouble information bit Slave trouble information Description Controlled by another master. The parameter sent by the master is incorrect. The response from the slave is incorrect. The function requested by the master is not supported. Expansion trouble information exists. The environment data received from the master does not match that of the slave. The slave is not ready to exchange. Cannot exchange with slave. Separated from the cyclic exchange by the parameter. 0 (reserved) The slave has entered the SYNC mode. The slave has entered the FREEZE mode. Watchdog timer monitoring is being conducted in the slave. 0 (fixed) Diagnostic data read request Parameter allocation request from the slave Buffer memory address demical (Hexadecimal) 2080(820H) bit = Set to 02B9H bit

51 3 SPECIFICATIONS (9) Global control area (Buffer memory address: 2081 (821H)) The buffer memory (2081(821H)) value and corresponding command table are shown below. Bit Value position (valid/invalid) Command Description 8 to 15 1/0 Group 1 to 8 selection Bits 8 to 15 correspond respectively to groups 1 to 8 and shows that the bit value is transmitted by the global control command to the 1 group (refer below). More than one group at a time can be selected from groups 1 to 8. When all bits 8 to 15 are 0, global control commands are sent to all the slaves. 5 1/0 SYNC The actual output data is written and held. 4 1/0 UNSYNC The actual output data hold is canceled. 3 1/0 FREEZE The actual input data is held and read. 2 1/0 UNFREEZE The actual input data hold is canceled. Bit position : 0 or 1 Group 1 Group 2 Group 3 Group 4 UNFREEZE FREEZE UNSYNC SYNC Group 5 Group 6 Group 7 Group 8 Bit specifications for UNSYNC/SYNC and UNFREEZE/FREEZE Bit position Command SYNC UNSYNC FREEZE UNFREEZE :0 or 1 : Conducted : Not conducted

52 3 SPECIFICATIONS (10) Trouble no information time setting area (Buffer memory address: 2084 (824H)) Set the time at seconds unit, which does not inform the communication trouble after the exchange start. Default value is 20 seconds so the communication trouble is not informed for 20 seconds after the exchange start. By this setting, in case the master power supply ON is faster than the slave power supply ON etc., it makes possible to prohibit an error that occurs temporary when system starts up. (11) Slave status area (Buffer memory address: 2112 (840H) to 2116 (844H)) This is the area that stores the status of each slave station. The following figure shows the configuration: Communication status area for all stations Communication status area for individual stations Buffer memory address demical (Hexadecimal) 2112(840H) 2113(841H) 2114(842H) 2115(843H) 2116(844H) b15 b0 Communication status (all stations) b15 Communication status (station 1 to station 60) b0 Indicates the communication status for all stations by a bit. 0: Normal in all stations 1: Faulty station exists b15 (Fixed at 0) Communication status for all stations b0 Indicates the communication status of each of the individual stations by a bit. (Reserve station and not set station are treated as normal station) 0: Normal 1. Data link error occurred b15 b0 1st station to 16th station 17th station to 32th station 33th station to 48th station 49th station to 60th station b0 b15 (Fixed at 0) The communication status of each slave station under communication is set up. This area is operated when either the normal service mode (Mode 0) or extended service mode (Mode E) is set up

53 3 SPECIFICATIONS (12) I/O start address area (Extended service mode (MODE E) only) (Buffer memory address: 2128 (850H) to 2247 (8C7H)) This area stores the start addresses of I/O areas for each slave station. INPUT OUTPUT Buffer memory address demical (Hexadecimal) b15 b0 2128(850H) 2129(851H) Input start address for 1st station Input start address for 2nd station 2130(852H) 2185(889H) 2186(88AH) Input start address for 59th station 2187(88BH) Input start address for 60th station 2188(88CH) Output start address for 1st station 2189(88DH) 2190(88EH) Input start address for 3rd station Input start address for 58th station Output start address for 2nd station Output start address for 3rd station 2245(8C5H) Output start address for 58th station 2246(8C6H) Output start address for 59th station This area is used while in the extended service mode (MODE E) only. When in the normal service mode (MODE 0), 0 is stored in all areas. Data is set in this area during module startup according to the parameters stored in the master station. The start address is set in 1 word units for both input and output. The data range is from 0 to 1919 (0 to 77FH). The start addresses are stored in the INPUT area, starting from the head. When nothing is assigned, -1 (FFFFH) will be set. Example: When the input byte length and output byte length for the first station are 3 bytes and 5 bytes, and those for the second station are 7 bytes and 3 bytes, respectively: Address 2128 (850H) : 0 (0H) Input start address Address 2129 (851H): 2 (2H) Address 2188 (88CH): 960 (3C0H) Output start address Address 2189 (88DH): 963 (3C3H) 2247(8C7H) Output start address for 60th station Input area Address Decimal (Hexadecimal) 0 (0H) 1st station 2nd input byte 1st station 1st input byte 1 (1H) 1st station 3rd input byte 2 (2H) 2nd station 2nd input byte 2nd station 1st input byte 3 (3H) 2nd station 4th input byte 2nd station 3rd input byte 4 (4H) 2nd station 6th input byte 2nd station 5th input byte 5 (5H) 2nd station 7th input byte Output area Address Decimal (Hexadecimal) 960 (3C0H) 1st station 2nd output byte 1st station 1st output byte 961 (3C1H) 1st station 4th output byte 1st station 3rd output byte 962 (3C2H) 1st station 5th output byte 963 (3C3H) 2nd station 2nd output byte 2nd station 1st output byte 964 (3C4H) 2nd station 3rd output byte

54 3 SPECIFICATIONS (13) Current operation mode area(buffer memory address: 2254 (8CFH)) This area stores the value which indicates the operation mode of the QJ71PB92D when it has started up. Stored Value 0000H Normal service mode (MODE 0) 0001H Parameter setting mode (MODE 1) 0002H Self-diagnosis mode (MODE 2) 000EH Extended service mode (MODE E) 0100H Normal service mode (MODE 0) 0101H Parameter setting mode (MODE 1) 0102H Self-diagnosis mode (MODE 2) 010EH Extended service mode (MODE E) Detail Where switched temporarily (not registered in a Flash ROM) using GX Configurator-DP or operation mode change request signal (Y11). Where registered in Flash ROM. (14) Operation mode change request area (Buffer memory address: 2255 (8CFH)) You can change the operation mode of the QJ71PB92D by writing the required operation mode to this area and turning on the operation mode change request signal Y11. You can also specify whether that setting is registered onto Flash ROM or not. To choose the required operation mode, set any of the following values to the operation mode change request area. (At power-on or CPU reset, the invalid value = FFFEH enters the operation mode change request area. If you have accidentally turned on the operation mode change request signal Y11, the QJ71PB92D detects an error and the operation mode is not changed.) Setting Value 0000H Normal service mode (MODE 0) 0001H Parameter setting mode (MODE 1) 0002H Self-diagnosis mode (MODE 2) 000EH Extended service mode (MODE E) 0100H Normal service mode (MODE 0) 0101H Parameter setting mode (MODE 1) 0102H Self-diagnosis mode (MODE 2) 010EH Extended service mode (MODE E) FFFFH Parameter setting mode (MODE 1) Detail Changes only the current mode (does not register in Flash ROM). Changes the current mode, and registers as a startup mode in Flash ROM. Changes to the normal service mode, and deletes the registration in Flash ROM. The default is the parameter setting mode (MODE 1). When the power is turned ON or the CPU is reset, the operation mode registered in the Flash ROM is started. When the mode registered in the Flash ROM using FFFFH is erased, the parameter setting mode (MODE1) is started. (15) Operation mode change result area (Buffer memory address: 2256 (8D0H)) This area stores the execution result of the operation mode change request. 0: Normal completion. 1: Abnormal completion. (A mode change request of the unauthorized value was given.) On abnormal completion, the QJ71PB92D does not change the operation mode. It maintains the same operation mode as before the change request was given

55 3 SPECIFICATIONS (16) Local station address display area (Buffer memory address: 2257 (8D1H)) Used to store the number of the local station. The storage area is 0 to 125. (17) Self-diagnosis status code area (Buffer memory address: 2258 (8D2H)) Used to store the test status of the offline test using codes. The types of the codes are as listed below. Code 0001H 0002H 0003H 0004H 0005H 0010H 0011H 8001H 8002H 8003H 8004H 8005H 8010H 8011H Status Under MPU test. Under time test. Under interruption test. Under RAM1 test. Under RAM2 test. Under swap circuit test Under Flash ROM test. An MPU test error occurs. A timer test error occurs. An interruption test error occurs. A RAM1 test error occurs. A RAM2 test error occurs. A swap circuit test error occurs. A Flash ROM test error occurs

56 4 FUNCTIONS 4. FUNCTIONS 4.1 Functions for Exchanging with Slaves The main function in the QJ71PB92D is for exchanging I/O data with slave stations connected to the PROFIBUS-DP network. The method used for this exchange is to read/write the I/O image in the buffer memory using auto refresh setting, FROM/TO instruction, or dedicated instruction. A schematic drawing of this exchange function is as follows. CPU module QJ71PB92D (Class 1 master) Buffer memory Read 1 Write 2 Input image Output image Input image Output image 1: Either auto refresh, FROM instruction, or dedicated instruction (BBLKRD) 2: Either auto refresh, TO instruction, or dedicated instruction (BBLKWR) 4 PROFIBUS-DP network Input image Input image Output image Output image Slave station

57 4 FUNCTIONS Exchange flow The I/O data exchange flow with slave station is shown below. The refresh between the CPU and QJ71PB92D and the refresh of buffer memory of QJ71PB92D are executed asynchronously with each other. Set the slave trouble information cancel area. (Setting is unnecessary if the default value can be left unchanged.) Communication trouble area type selection (This setting is unnecessary if the default value can be left unchanged.) 4 Write the initial OUTPUT data value in the output area. Turn ON the exchange start request signal (Y00). Check that the exchange start/end signal (X00) is ON. The input data will be read from the input area to the device of the CPU specified by the auto refresh setting. Read the input data from the input area using the FROM instruction. Turn ON the dedicated instruction valid signal (Y0C). The output data from the device of the CPU specified by the auto refresh setting will be written to the output area in the buffer memory. Write the OUTPUT data in the output areain the buffer memory using the TO instruction. Read the input data from the input area using the dedicated instruction (BBLKRD). Using the dedicated instruction (BBLKWR), write the output data to the output area in the buffer memory

58 4 FUNCTIONS Global control functions Global control contains the four functions of SYNC, UNSYNC, FREEZE, and UNFREEZE, which are functions that are used to maintain/cancel slave I/O for which multicast communication is conducted at the same time. The slaves that execute the global control function are those located in one or more groups of the eight groups. The group No. of the group containing the slaves is set by the configurator. In the QJ71PB92D the group can be arbitrary specified and the global control commands transmitted using multicast communication. This makes is possible to select a slave and conduct global control. Master PROFIBUS-DP network Group 1 Group 5 The global control function is executed using X, Y, and FROM/TO instructions from the sequence program. (1) Service SYNC, UNSYNC Master (SYNC transmission to group 1) Output data SYNC (Group 1) (Group 2) (Group 1) (Group 1) Slave 1 Slave 2 Slave 3 Slave n Output image memory: Data is always refreshed using polling. <During UNSYNC execution/default>the output image memory value is output unchanged (normal condition) <During SYNC execution>the output image memory value is only output once during the SYNC service timing. Service SYNC (issued in the same group)

59 4 FUNCTIONS (2) Service FREEZE, UNFREEZE Master (FREEZE transmission to group 3) Input data (Group 8) (Group 3) (Group 3) FREEZE (Group 3) Slave 1 Slave 2 Slave 3 Slave n Input image memory: The data is always refreshed by polling. <during FREEZE cancel/default>the actual input is input to the input memory unchanged (normal condition) <during FREEZE execute>the actual input is input once into the input image memory at the FREEZE service timing. Service FREEZE (issued within the same group) (3) Group selection The number of groups is from 1 to 8 if with a total of 8 groups. The slave can exist in arbitrary group of the 8 groups. They can also exist in multiple groups. (The configurator specifies in which group which slaves exist.) Multiple groups can be arbitrarily selected from the sequence program and global control executed. When selecting group 0 and transmitting the service is transmitted to all slave stations. Master (transmitted to groups 1 and 2) PROFIBUS-DP network Slave Group 1 Group 5 Group 2 Group

60 4 FUNCTIONS (4) Procedure for issuing a global service. Sequence program QJ71PB92D Slave TO global control area Turn on the global control request signal (Y04). Turn on the global control end signal (X04). Global control service Time

61 4 FUNCTIONS Word data swap function This is the function to exchange (swap) the upper and lower bytes of the I/O data stored in the buffer memories of the CPU and QJ71PB92D. For the PROFIBUS-DP and MELSEC series, the function is used to input and output word data into and from the slave because the upper and lower bytes are reversed to each other in the processing of the word data. The function enables the upper and lower bytes to be swapped in the area for each station, and the word data processing need not swap the bytes using the sequence program. For the swap function setting method for word data, refer to the GX Configurator-DP operating manual. Standard Swap Function Settings Classified by Slave Station Classification by slave station Byte (I/O) data only Word data only Mixture of byte (I/O) data and word data Swap function setting Not swapped Swapped Not swapped (Only for word data, swapped using the sequence program) The following shows the examples of data transmission for non-execution/execution of swap function classified by processed data. Slave station Examples of data transmission (for input) Nonexecution of swap (Initial setting) CPU X0 = 1 X7 = 1 X8 = 0 QJ71PB92D Buffer memory b15 to b8 b7 to b0 0 to 01 to 1 Slave station XF to X8 X7 to X0 0 to 01 to 1 Byte data (I/O) only XF = 0 Execution of swap CPU X0 = 0 X7 = 0 X8 = 1 QJ71PB92D Buffer memory b15 to b8 b7 to b0 1 to 10 to 0 Swap processing Slave station XF to X8 X7 to X0 0 to 01 to 1 XF = 1 Nonexecution of swap (Initial setting) D0 34H CPU 12H QJ71PB92D Buffer memory 34H 12H Upper and lower bytes are reversed to each other. Slave station 12H 34H Word data only Execution of swap D0 CPU 12H 34H QJ71PB92D Buffer memory 12H 34H Swap processing Upper and lower bytes are reversed to each other. Slave station 12H 34H

62 4 FUNCTIONS Slave station Nonexecution of swap (Initial setting) Examples of data transmission (for input) D0 CPU X0 = 1 X7 = 1 X8 = 0 XF = 0 34H 12H QJ71PB92D Buffer memory b15 to b8 b7 to b0 0 to 01 to 1 34H 12H Upper and lower bytes are reversed to each other. Slave station XF to X8 X7 to X0 0 to 01 to 1 12H 34H Byte data (I/O) is mixed with word data. Execution of swap D0 CPU X0 = 0 X7 = 0 X8 = 1 XF = 1 12H 34H QJ71PB92D Buffer memory b15 to b8 b7 to b0 1 to 10 to 0 12H 34H Swap processing Upper and lower bytes are reversed to each other. Slave station XF to X8 X7 to X0 0 to 01 to 1 12H 34H : For a slave station where byte data (I/O) is mixed with word data, it is recommended to swap-process only the word data using the sequence program without executing the swap function

63 4 FUNCTIONS I/O data separation prevention function The I/O data separation prevention function is a function to prevent the I/O data of the PLC CPU from being unmatched with the I/O data of the slave station. (1) I/O data separation prevention function (a) The separation of I/O data occurs when the buffer memory is also read from/written to the PLC CPU during the data transmission between the buffer memory of QJ71PB92D and the slave station. The following shows the example of the separation occurred when the data is read from the PLC CPU during the data transmission from the slave station to the buffer memory. Example of separation of I/O data PLC CPU QJ71PB92D Buffer memory Slave station B A D C 1 3 B D 0 2 A C Read Data transmission : Area where data transmission from slave station is updated : Area where data transmission from slave station is not yet updated (b) When the separation prevention function is used, the reading from the PLC CPU is waited during the data transmission from the slave station to the buffer memory (input area ) of QJ71PB92D, and executed after the data transmission has been completed. Also, the data transmission to the slave station is waited until the writing from the PLC CPU to the buffer memory (output area) of QJ71PB92D is completed, and executed after the writing has been completed. (c) To activate the I/O data separation prevention function, two methods are available: a method to select the Separation Prevention in setting the auto refresh and a method to use the dedicated instruction (BBLKRD/BBLKWR) in the sequence program. When a refresh is performed between the buffer memory of QJ71PB92D and the PLC CPU using the FROM/TO instruction, the separation prevention function cannot be used. (d) The separation prevention function can be used when the CPU module has the following serial No. (See section 2.5). QCPU (Q mode): Serial No and subsequent. (e) When the separation prevention function is used, there is a wait for reading from /writing to the PLC CPU and the data transmission between the CPU and the slave station, therefore, the transmission between the PLC CPU and the slave station is delayed. For the transmission delay time, refer to section 6.2 Transmission delay time

64 4 FUNCTIONS (2) Separation prevention by auto refresh setting When a data transmission between the buffer memory of QJ71PB92D and the PLC CPU is performed by auto refresh setting, the separation is selected to function the separation prevention. To activate the separation prevention function, two methods are available: a method to select the Separation Prevention in setting the I/O data batch auto refresh and a method to select it in setting the auto refresh for each station. The auto refresh is set to a parameter of QJ71PB92D using GX Configurator-DP. For GX Configurator-DP setting operation, refer to the GX Configurator-DP operating manual. [Master Settings Screen]

65 4 FUNCTIONS (3) Separation prevention by dedicated instruction The separation prevention function is executed using the BBLKRD instruction (read) and BBLKWR (write) which are the dedicated instructions for reading/writing of the buffer memory from and to QJ71PB92D. When the writing/reading of the buffer memory are executed using the FROM/TO instruction, the separation prevention function cannot be used. (a) For detail of the BBLKRD instruction, refer to section 8.1. For detail of the BBLKWR instruction, refer to section 8.2. (b) Use the BBLKRD instruction and BBLKWR instruction in pairs, and ensure to execute for each sequence scan (Refer to the program example in section 7.4). Even when either of the reading of input data and writing of output data is not required, read/write the dummy input data or output data using the BBLKRD/BBLKWR instructions. When only either of the BBLKRD instruction and BBLKWR instruction is used, the transmission delay time becomes longer. G.BBLKRD U0 K0 D0 K10 Program processing input and output data G.BBLKWR U0 K960 D0 K10 (c) Before the dedicated instructions (BBLKRD/BBLKWR) are executed, the dedicated instruction valid signal (Y0C) must be turned ON. If the dedicated instruction valid signal (Y0C) is turned OFF, the dedicated instructions (BBLKRD/BBLKWR) will become invalid

66 4 FUNCTIONS 4.2 Operation Mode QJ71PB92D has four operation modes: Normal service mode (MODE 0), Extended service mode (MODE E), Parameter setting mode (MODE 1), and Self-diagnosis mode (MODE 2). The operating modes are set using the GX Configurator-DP. Each of these modes is explained as follows. Operation mode Normal service mode (MODE 0) Extended service mode (MODE E) Parameter setting mode (MODE 1) Self-diagnosis mode (MODE 2) Reference Description section Mode in which a communication is made with the slave station. The I/O areas for each slave station are allocated to a fixed 32 bytes. Section Mode in which a communication is made with the slave station. The I/O areas for each slave station are allocated to the areas of any Section size (The I/O area size for each slave station is set using GX Configurator-DP). Mode in which parameters are set in QJ71PB92D. Normally, GX Configurator-DP switches the operation mode automatically to this mode when setting parameters, and after setting the parameters, switches to the mode set in the flash ROM. When the mode is set to the Parameter setting mode using the operation mode change signal (Y11), the mode is changed to the other operation mode using the GX Configurator-DP. A communication with the slave station is not performed. Mode in which the test for diagnosing the QJ71PB92D module for hardware error. Section 5.4 A communication with the slave station is not performed

67 4 FUNCTIONS Normal service mode (MODE 0) This is the mode for communicating with the slave station by allocating 32 bytes (16 words) of I/O area of the QJ71PB92D buffer memory to each slave station. Because the I/O area size of each slave station is fixed, the buffer memory address is easier to understand, and the size need not be set to the parameters for each slave station. However, when the number of devices is 32 bytes or less, an empty space is produced between the areas of the slave stations, and additional number of devices is required for the batch reading/writing of the I/O area. The fixedly set number of slave stations is 60. After the communication start is completed (X00=ON), the data allocated to the fixed area is transmitted to each slave station. Before the communication is started or when it is interrupted, the I/O data is not updated. Input area Output area 0 ( 0H) 16 ( 10H) 32 ( 20H) 960 (320H) 976 (330H) QJ71PB92D buffer memory 1st station input data 2nd station input data 3rd station input data 1st station output data 2nd station output data 992 (340H) 3rd station output data PROFIBUS-DP network Slave station (Station No. 1) Input data (32 bytes) Output data (32 bytes) Slave station (Station No. 2) Input data (16 bytes) Output data (16 bytes) Slave station (Station No. 3) Input data (32 bytes) Output data (32 bytes) : Empty area

68 4 FUNCTIONS Extended service mode (MODE E) This is the mode for communicating with the slave station by allocating any I/O area of the QJ71PB92D buffer memory to each slave station. Because the I/O area size can be set for each slave station, an empty space is not produced in the buffer memory of QJ71PB92D. Therefore, the data can be read from/write to the continuous area of the PLC CPU. The area of allocation for each slave station is set using the GX Configurator-DP. The area of allocation in the input and output areas for each station is 0 to 244 bytes (0 to 122 words). The set number of slave stations 1 to 60. When an area of 244 bytes (max) is allocated for each station, up to seven stations can be set up. After the communication start is completed (X00=ON), the allocated area data equivalent to an amount of specified number of bytes is transmitted to each slave station. Before the communication is started or when it is interrupted, the I/O data is not updated. Input area Output area 0 ( 0H) 16 ( 10H) 24 ( 18H) 960 (320H) QJ71PB92D buffer memory 1st station input data 2nd station input data 3rd station input data 1st station output data 976 (330H) 2nd station output data 984 (338H) 3rd station output data PROFIBUS-DP network Slave station (Station No. 1) Input data (32 bytes) Output data (32 bytes) Slave station (Station No. 2) Input data (16 bytes) Output data (16 bytes) Slave station (Station No. 3) Input data (32 bytes) Output data (32 bytes)

69 5 PROCEDURES BEFORE SYSTEM OPERATION 5. PROCEDURES BEFORE SYSTEM OPERATION 5.1 Procedures before Operation The procedure for newly connecting QJ71PB92D to an existing PROFIBUS-DP network is explained below. For the operation of GX Configurator-DP, refer to the PROFIBUS-DP configuration operating manual. Start Set the CPU module to STOP. Start the self-diagnosis of the QJ71PB92D. Refer to Section 5.4. Is the self-diagnosis result normal? (Are the TEST and FAULT LEDs off?) Yes No This is a hardware fault. Confirm the self-diagnosis result and consult your local Mitsubishi representative. 5 Set the parameters using GX Configurator-DP. Is the automatic refresh setting used? Yes Reset the CPU module. No Refer to Section Is the QJ71PB92D placed in the mode that enables exchange with slave stations? (Is the operation mode set to MODE 0 or MODE E?) Yes No Change the mode of the QJ71PB92D to the mode that enables exchange with slave stations (MODE 0 or MODE E). 1 Connect the PROFIBUS cable to the slave station, and start the slave station. Refer to the manual of the slave station. Start the QJ71PB92D communications. 2 Has the QJ71PB92D started normal communications? (Are the READY and TOKEN LEDs on and the PRM SET and FAULT LEDs off?) No (Recheck the parameter settings.) Yes Ready 1: Change the operation mode in either of the following methods. Change from GX Configurator-DP. Use the operation mode change request area (buffer memory address: 2255) and operation mode change request signal (Y11). 2: Start the communications in either of the following methods. Turn on the exchange start request signal (Y00). Start from GX Configurator-DP

70 5 PROCEDURES BEFORE SYSTEM OPERATION Parameter setting procedure The procedure for setting the QJ71PB92D parameters is described below. (1) Start GX Configurator-DP, and select the module type and mode from the [File]- [New] menu. (2) In the [Setup]-[GSD Device-Database] menu, register the GSD file (DDB file) for each slave. (3) Set the master parameters and bus parameters. (4) Right-click on the symbolic graphics of the network, and select the [Insert DP- Slave] from the menu, and set the slave type and slave parameters. (5) On the [Actions]-[Write to PB92D] menu, write parameters to QJ71PB92D. Wite PLC CPU GX Configurator-DP QJ71PB92D (RS232 or USB) GSD file for slave station (DDB file) 5 Max ST delay resp (Max Tsdr), Quiet Time (Tqui), Setup Time (Tset) in the parameter to be set by the GX Configurator-DP ProfiMap must be match the maximum value connected to the network, including master station. The value of the QJ71PB92D is shown below. Below 187.5Kbps 500Kbps 1.5Mbps 3Mbps 6Mbps 12Mbps Max Tsdr Tqui Tset : The GSD file (DDB file) for a slave station is supplied from the manufacturer of the slave station. IMPORTANT Do not turn off the power or reset the CPU module while the parameters are being written using GX Configurator-DP. To do so may result in repair of the QJ71PB92D. Follow the screen instructions of GX Configurator-DP

71 5 PROCEDURES BEFORE SYSTEM OPERATION The parameter items set in QJ71PB92D using GX Configurator-DP are shown below. (1) Master Parameter Parameter Range Meaning Name States that the QJ71PB92D is a master. Baud Rate 9.6 kbps to 12 Mbps FDL address 0 to 125 FDL address (station number) Head address on PLC Error action flag Min.slave interval Polling timeout Data control time Transfer rate for the communication. Define a baud rate that is supported by all slaves. 0 to FE Module head address on the base unit 0 to µs 0 to ms 0 to µs Autom.Refresh Consistency Output processing after error. Check to shut off an output when an error occurs (recommended for drivers and inverters). Smallest allowed period of time between two slave poll cycles. This ensures that the sequence of function requests from the DP master can be handled by the DP slave. This value is valid for all installed slaves. The slowest slave defines this value. In case of master-master communication this parameter specifies the max. Amount of time it may take the requestor to fetch the response. This parameter defines the period of time during which the QJ71PB92D notifies the slave operation status. This time is 6 times longer than the watch-dog control of slaves. Check when performing the auto refresh of the CPU device and QJ71PB92D buffer memory. Check when executing the separation prevention function at the time of auto refresh (Invalid when the auto refresh is not executed). POINT When the Error action flag is set to be enabled, a fault of only one slave will clear all slave outputs. To start outputs again, perform either of the following. Turn the exchange start request signal (Y00) off once and then on again. Reset the CPU module

72 5 PROCEDURES BEFORE SYSTEM OPERATION (2) Bus Parameter Usually, the bus parameters need not be changed. When changing these parameters, understand the PROFIBUS-DP standards beforehand. Parameter Range Description Remark Baud rate see selection Transfer rate Must be supported by all slaves Slot Time (T_sl) 1 to t_bit Slot time Max.Interval to wait for response If the time is exceeded, an error will be detected min T_sdr 0 to t_bit Min. Station delay of responder max T_sdr 0 to t_bit Max. Station delay of responder Quiet_Time (T-qui) 0 to 255 t_bit Quiet time Time needed to switch the transmission direction of the repeater T = 0, if no repeater present Setup Time (T-set) 1 to 255 t_bit Setup time Target Rot. Time (T_tr) 1 to t_bit Target rotation time GAP factor 1 to 100 Controls the GAP update time (T_gud) HSA 2 to 126 Highest station address Maxretry limit 0 to 7 Max.number of retries

73 5 PROCEDURES BEFORE SYSTEM OPERATION (3) Slave Parameter parameter Range Meaning Name The name of the slave can be defined. FDL address 0 to 125 This parameter is used to define the station address of the slave. Watchdog Check (enable) the check box to use the watchdog timer. When enabled If data is not received from the master station during the time set to Watchdog time, the slave station with this setting detects a communication error. The output status of the slave station at communication error detection varies depending on the slave station specifications. When disabled Even if data is not received from the master station, the slave station with this setting does not detect any communication error. The output status of the slave station remains unchanged from the output data that the slave station received last. Watchdog time 1 to ms min T_sdr 1 to 255 Group identification number Grp 1 to Grp 8 Active Sync (Output) Freeze (Input) Input CPU Device Output CPU Device Depending on slave Depending on slave Swap I/O Bytes User Param. Set the time when using the watchdog timer. The set value is to be equal to or greater than the bus cycle time and equal to or less than 1/6 of [Data control time]. This is the minimum waiting time for a DP slave until it is allowed to send response frames to the DP master. Do not change this value. Click on the white boxes to allocate the group for the slave. A slave can belong to several groups (Grp1 to Grp8). When this option is activated, you can get information whether the defined slave really exists. With this function, you can define slaves which are not really existent but should be added physically later on. When this option is activated, it is checked whether the slave supports or not the SYNC function during the communication for initialization. If the slave does not support the SYNC function, the error code (0200H) will be stored in the communication trouble area of QJ71PB92D. When this option is activated, it is checked whether the slave supports the Freeze function during the communication for initialization. If the slave does not support the Freeze function, the error code (0200H) will be stored in the communication trouble area of QJ71PB92D. This section is used to define the CPU side device and head number corresponding to the input data This section is used to define the CPU side device and head number corresponding to the output data Click on the white box if you want to swap the I/O data on the buffer memory of QJ71PB92D. Use this button if you want to handle the word data. Press this button and the slave user parameter setting window will appear on the screen. Do not change the slave user parameter

74 5 PROCEDURES BEFORE SYSTEM OPERATION 5.2 Installation Handling precautions The following section explains the precautions when handling the QJ71PB92D, from the time they are unpacked until they are installed. For more details on the module installation, see the user's manual for the PLC CPU used. (1) Do not drop the module case or subject it to heavy impact since it is made of resin. (2) Do not remove the PCB of each module from its case. This may cause a failure in the module. (3) Be careful not to let foreign objects such as wire burrs enter the module during wiring. In the event any foreign object enters, remove it immediately. (4) The top surface of the module is covered with a protective film to prevent foreign objects such as wire burrs from entering the module during wiring. Do not remove this film until the wiring is complete. Before operating the system, be sure to remove the film to provide adequate heat ventilation. (5) Tighten the module fixing screws and connector mounting screws using torque within the following ranges. Screw location Module fixing screw (M3 screws) PROFIBUS cable connector mounting screws (#4-40UCN) Tightening torque range 36 to 48 N cm 20 to 28 N cm Installation environment Refer to user s manual of the CPU module used

75 5 PROCEDURES BEFORE SYSTEM OPERATION 5.3 Part Names and Settings Following is an explanation of the QJ71PB92D part names and settings. QJ71PB92D RUN TEST SD/RD TOKEN READY PRM SET RSP ERR. FAULT (a) BUS TERMINATION OFF ON PROFIBUS I/F (b) (c) QJ71PB92D No. Name Description Remark (a) LED Displays the QJ71PB92D status. Name RUN TEST SD/RD TOKEN READY Display description Displays the QJ71PB92D operation status. ON : During normal operation OFF : When there is an error Turns on when a self-diagnosis is executing. Flashing during communication with the slave station on the PROFIBUS network. The flashing interval is the one set to Data control time of the Master Parameter. Turns on when token is maintained. Turns on when the PROFIBUS-DP network subscription preparation is completed and during subscription

76 5 PROCEDURES BEFORE SYSTEM OPERATION No. Name Description Remark (a) LED PRMSET Turns on when the operation is in the Parameter setting mode (MODE 1)(PARAMETER.SET). If this is lit when the operation is in the Normal service mode (MODE O) or Extended service mode (MODE E), the parameters will not be written. RSP ERR. Turns on when communication error is occured. FAULT Turns on when an error occurs. (b) PROFIBUS network terminal This sets whether or not there is terminal resistance inside the QJ71PB92D. (at time of shipment: OFF) Always ON for both ends of the station resistance setting ON : has terminal resistance on the PROFIBUSswitch 1 OFF : no terminal resistance DP network. (c) PROFIBUS Connector for connecting the table for the PROFIBUS-DP interface connector network. 2 1: Operate the PROFIBUS network terminating resistor setting switch with your fingertips. Do not use a screwdriver or similar tool. To do so may damage the switch. 2: For the connector type, use a male D-Sub 9 pin. The user creates the PROFIBUS cable. (for information regarding the cable wiring, refer to Item 5.5.) The size of the screw which can be used for the connector is #4-40 UNC

77 5 PROCEDURES BEFORE SYSTEM OPERATION 5.4 Execution Method for Self-diagnosis This section describes the procedure for self-diagnosis, status during self-diagnosis, and results after self-diagnosis. (1) Procedure for self-diagnosis The procedure for self-diagnosis is as follows. 1) Set QJ71PB92D to the Self-diagnosis mode (MODE 2) using GX Configurator- DP or operation mode change request signal (Y11). For the operation mode change operation, refer to the GX Configurator-DP operating manual. The self-diagnosis will start automatically. 2) The TEST LED on QJ71PB92D will flash during the self-diagnosis. 3) When the results of the self-diagnosis are normal: The TEST LED and FAULT LED go off. If the results of the self-diagnosis are abnormal (an error occurs): The TEST LED and FAULT LED will light up. If the results of the self-diagnosis are abnormal, the self-diagnosis status code will be stored in the self-diagnosis status area (buffer memory address: 2258 (8D2H)) of the buffer memory. Self-diagnosis status code 8001H 8002H 8003H 8004H 8005H 80FFH Type of error MPU test error Timer test error Interruption test error RAM1 test error RAM2 test error Flash ROM test error

78 5 PROCEDURES BEFORE SYSTEM OPERATION 5.5 Wiring PROFIBUS cable wiring This section explains the wiring to PROFIBUS connector for the QJ71PB92D (1) Pin assignments for the connector Pin No. Symbol Name Application 1 SHIELD Shield, Protective Ground 2 RP 1 Reserved for Power 3 B/B RxD/TxD-P Receive/Transmit Data-P 4 CNTR-P 1 Control-P 5 C/C DGND Data Ground 6 VP 2 Voltage-Plus 7 RP 1 Reserved for Power 8 A/A RxD/TxD-N Receive/Transmit Data-N 9 CNTR-N *1 Control-N 1 Signal is optional. 2 When the terminal resistance value of building into is made it is, signal is used. Wiring is not needed. (2) Wiring QJ71PB92D SHIELD RxD/TxD-P 1 3 PROFIBUS cable RxD/TxD-N 8 REMARK Terminator switch For details on making Mitsubishi PLC conform to the EMC directive and low voltage instruction when installing it in your product, please see Chapter 3, EMC Directive and Low Voltage Instruction of the PLC CPU User s Manual (Hardware). Please use the PROFIBUS cable with braided shield. (1) Whether or not to set the built-in module terminal resistance (1/2W 220 x 2 units) can be selected by connecting a switch. (The stations on both ends of the PROFIBUS segment must be connected with terminal resistor.) Silk display ON OFF Disconnects terminal resistor (setting at time of BUS TERMINATION Connects terminals resistor shipment) (2) When the QJ71PB92D's bus termination switch is set to on (has terminal resistor), do not remove the PROFIBUS cable from the QJ71PB92D during PROFIBUS- DP network operation. If the cable is removed, then the terminal resistor in the network will disappear, causing an error and bringing down the network

79 5 PROCEDURES BEFORE SYSTEM OPERATION Precautions against wiring As one of the requirements to give full play to QJ71PB92D s functions and make up the system with high reliability, it is necessary to have an external wiring unsusceptible to an influence of noise. Precautions against external wiring of QJ71PB92D is described below. (1) Do not route the wire of QJ71PB92D close to or bundle it together with the main circuit and high-tension lines, or the load-carrying lines from other than the PLC. Otherwise, the module may be susceptible to an influence of noise and surge induction. (2) Keep the wires from the input/output modules of the PLC away from the communication cable as much as possible as shown below. Power supply module PLC CPU Input module Input module Output module Output module QJ71PB92D Wiring of input module Shield twisted-pair cable Wiring of output module Shielded covering (3) Grounding (a) When using the QJ71PB92D, ground the FG and LG terminals of the power supply module of the PLC. (b) If communication cannot be performed after grounding because of abnormal voltage applied to the FG terminal, the module may be used without grounding

80 5 PROCEDURES BEFORE SYSTEM OPERATION 5.6 Maintenance and Inspection For the QJ71PB92D, eliminate the check of cable connection and looseness and do not include it as an inspection item. Otherwise, follow the inspection item instructions in the PLC CPU User s Manual to always use the system in good condition. DANGER! Switch all phases of the external power supply off before cleaning. If you do not switch off the external power supply, it will cause failure or malfunction of the module. CAUTION! Never disassemble or modify the module. This may cause breakdowns, malfunctioning, injury and/or fire.! Switch all phases of the external power supply off before mounting or removing the module. If you do not switch off the external power supply, it will cause failure or malfunction of the module.! Do not touch the conductive area or the electronic parts of the module. Doing so may cause malfunctioning or breakdowns

81 6 COMMUNICATION TIME 6. COMMUNICATION TIME 6.1 Bus Cycle Time (1) Bus cycle time when there is one master station An explanation of the bus cycle time when there is one master station is given in the following diagram. The following diagram (Fig. 6.1) shows an example for when there are 3 slave stations. Time QJ71PB92D Buffer memory QJ71PB92D Internal buffer Slave1 6 Slave2 Slave3 Treq(1) Tres(1) Treq(2) Tres(2) Treq(3) Tres(3) Max_Tsdr(1) Max_Tsdr(2) Max_Tsdr(3) Lr Pt(1) Pt(2) Pt(3) Tsdi(M) Tsdi(M) Tsdi(M) MSI(Min Slave Interval) Bc Fig. 6.1 The bus cycle time when there is one master station

82 6 COMMUNICATION TIME Calculate the bus cycle time (Bc) of the master station with the following expression. The symbols within [] indicate units. Bc[s] = Max (MSI, n i =1 (Pt(i) + Tsdi(M)) + Lr) n = number of slave stations Max (A, B) = A or B, whichever is greater (a) MSI[s] = Minimum polling cycle (Min. slave interval) 1 1: The value set on the "Master Setting" screen of GX Configurator-DP (b) Pt(i)[s] = (Polling time of No. i station) = Treq(i) + Max_Tsdr(i) + Tres(i) 1) Treq(i)[s] = Request transmission time of No. i station = [{(Number of bytes output to No. i station) + 9} 11[bit]] / (transmission speed[bps]) 2) Max_Tsdr(i)[s] = (response time [TBit] of No. i station) 2, 3 / (transmission speed[bps]) 2: MaxTsdr value described in the GSD (DDB) file of the slave station. 3: [TBit] (Bit Time) is a unit that expresses the time required for 1-bit data transmission as "1". The actual processing time differs as described below depending on the transmission speed. [1.5Mbps] 1 [TBit] = 1 / ( ) = [µs] [12Mbps] 1 [TBit] = 1 / ( ) = [µs] 3) Tres(i)[s] = (Response transmission time of No. i station) = [{(Number of bytes input from No. i station) + 9} 11[bit]] / (transmission speed[bps]) 6 (c) Tsdi(M)[s] = (Request/response processing time [TBit] of master station (QJ71PB92D)) 4 / (transmission speed[bps]) 4: Tsdi value described in the GSD (DDB) file of the QJ71PB92D. The Tsdi value varies as described below depending on the transmission speed. Refer to 3 for the unit [TBit]. Request/response processing time [TBit] of master station Transmission speed [bps] 9.6k 19.2k 93.75k 197.5k 500k 1.5M 3M 6M 12M (d) Lr[s] = (data refresh time) = (number of slave stations)

83 6 COMMUNICATION TIME The calculation example of the bus cycle time is shown below. Master station (Station No. 0) QJ71PB92D Transmission speed: 1.5Mbps Number of slave stations: 3 stations PROFIBUS-DP Slave station (Station No. 1) AJ95TB2-16T Input: 0 points Output: 16 points Slave station (Station No. 2) AJ95TB3-16D Input: 16 points Output: 0 points Slave station (Station No. 3) QJ71PB93D Input: 1 word Output: 2 words AJ95TB2-16T AJ95TB3-16D QJ71PB93D Output data size [byte] Input data size [byte] (a) MSI[s] value MSI[s] = = (b) Pt(i)[s] value Item Slave station AJ95TB2-16T (Station No. 1) AJ95TB3-16D (Station No. 2) AJ71PB93D (Station No. 3) 1) Treq(i)[s] {(2 + 9) 11} / ( ) {(0 + 9) 11} / ( ) {(4 + 9) 11} / ( ) = = = Response time [TBit] of 150 No. i station ) Max_Tsdr(i)[s] 150 / ( ) = / ( ) = / ( ) = ) Tres(i)[s] Pt(i)[s] 3 i =1 {(0 + 9) 11} / ( ) {(2 + 9) 11} / ( {(2 + 9) 11} / ( = = = = = = (c) Tsdi(M)[s] value Request/response processing time [TBit] of master station (QJ71PB92D) = 150 Tsdi(M)[s] = 150 / ( ) = (d) Lr[s] value Lr[s] = = From the values in above (b) to (d) (Pt(i) + Tsdi(M)) + Lr = {(Pt(1) + Tsdi(M)) + (Pt(2) + Tsdi(M)) + (Pt(3) + Tsdi(M))} + Lr = {( ) + ( ) + ( )} = = Hence, the bus cycle time (Bc) value is as follows. 3 Bc[s] = Max (MSI, (Pt(i) + Tsdi(M)) + Lr) i = = Max (2.0 10, ) -3 = [s] 6 ) 6 )

84 6 COMMUNICATION TIME (2) Bus cycle time when there are multiple master stations Following is an explanation of the bus cycle time when multiple masters are connected to the same network. The following diagram (Fig. 6.2) shows when 2 masters are connected to the same network. Bc(1) and Bc(2) in the following diagram (Fig. 6.2) are the master 1 and master 2 bus cycle times respectively, and their total time is calculated using the formula presented in Section 6.1. Master 1 executes polling Master 2 executes polling Master 1 executes polling Time Master 1 bus cycle time Bc(1) Master 2 bus cycle time Bc(2) TBC Fig. 6.2 The Bus Cycle time when multiple masters are connected As shown in this diagram, each master total bus cycle time is calculated as: Number of the master stations TBc = Bc (n) n =

85 6 COMMUNICATION TIME 6.2 Transmission Delay Time The transmission delay time of the input data and output data varies depending on the separation prevention setting. The calculation expressions for the transmission delay time are given in (1) and (2). The following are used in the calculation expressions in (1) and (2). Bc: Bus cycle time Scan: Scan time (1) Without separation prevention function A transmission delay time when I/O data is read/written using the automatic refresh setting (without separation prevention function) or FROM/TO instruction. (a) Output delay Transmission delay time Normal value Bc Max. value Bc 2 (b) Input delay Normal value Max. value Transmission delay time Scan + Bc 2 Scan + Bc (2) With separation prevention function A transmission delay time when I/O data is read/written using the automatic refresh setting (with separation prevention function) or dedicated instruction. (a) Output delay Conditions Transmission delay time Normal value Scan Bc 0.5 Scan 2 Bc Bc 2 Max. value Scan 2 > Bc Scan 2 + Bc (b) Input delay Normal value Max. value Conditions Transmission delay time Scan + Bc 2 Scan 2 Bc Scan + Bc Scan 2 > Bc and Scan 3 Bc 2 Scan + Bc 2 Scan > Bc Scan

86 7 PROGRAMMING 7. PROGRAMMING The following shows the program examples used to execute the global control and execute the separation prevention function using the dedicated instruction during the communication in the Normal service mode (MODE 0) and Extended service mode (MODE E). The device allocation in the program example is as shown below (QJ71PB92D head I/O number: 00H) Device X20 to X2F X100 to X14F Y100 to Y14F D0 D1 D100 D101 D1000 Description User command signal Destination of input data transfer from slave station Source of output data transfer to slave station Mode change result storage Current mode storage Slave station 1 input address storage (in Extended service mode (MODE E)) Slave station 1 output address storage (in Extended service mode (MODE E)) Communication trouble information storage 7.1 Communication Using Automatic Refresh Setting The following shows the setting and program example used when the I/O data is read/written using the automatic refresh setting. (1) Automatic refresh setting The following setting example assumes that the automatic refresh setting of I/O data is made per slave. (a) When using GX Configurator-DP Version 6 1) Make the automatic refresh setting in the master parameters. [Master Settings] Autom. Refresh: Check. When executing separation prevention in the automatic refresh mode, check Consistency

87 7 PROGRAMMING 2) Set the devices used for automatic refresh in the slave parameters. [Slave Parameter Settings]: Set the devices to Addresses in MELSEC CPU Memory. The refresh point settings are not required because GX Configurator- DP automatically calculates from the slave parameters. When the devices set to the input and output are bit devices, set their head numbers in increments of 16 points. 3) Enable the auto refresh settings made in the slave parameters. Open [AutoRefresh Setting] in the [Setup] menu. As the following screen appears, check Slave Specific Transfer. 7 POINT You can use automatic block transfer to speed up I/O data transfer processing. To use this function, set I/O devices for Block Transfer in the above dialog box. At this time, the auto refresh setting preset with the slave parameters is disabled. When the I/O devices set for Block Transfer are bit devices, set their head numbers in increments of 16 points

88 7 PROGRAMMING 4) Write the project file (*.DP2) of GX Configurator-DP, where the master parameters, slave parameters and auto refresh settings (IPARAM file) have been set, to the CPU module. Open [Write to PB92D] in the [Action] menu. As the following screen appears, check Update Autorefresh and click the Download button. POINT When the auto refresh settings (IPARAM file) are written to the CPU module using this package during GX Developer start-up, they are not displayed in "Read from PLC" or "Delete PLC data" and other file list of GX Developer. Therefore, update the file list using the "Refresh view" button on the "Read from PLC" or "Delete PLC data" screen of GX Developer. 5) After writing the project file (*.DP2) of GX Configurator-DP, reset the CPU module. (b) When using GX Configurator-DP Version 4 1) Make the automatic refresh setting in the master parameters. [Master Settings] Autom. Refresh : Check When executing separation prevention in the automatic refresh mode, check Consistency

89 7 PROGRAMMING 2) In the slave parameters, set the devices and head numbers used for automatic refresh. Make settings using [Slave Parameter Settings]: Addresses in MELSEC CPU Memory.You need not set the numbers of refresh points since they are automatically calculated by GX Configurator-DP from the slave parameters. When the devices set for input and output are bit devices, set the head numbers in increments of 16 points. 3) In the [Tools] menu, open [Profibus Configuration Utility]. In the PROFIBUS Configuration Utility main menu select File/New to create a new IPARAM configurator project or File/Open to open an existing project. Enter the file name for a new project or select an existing project from the browse list

90 7 PROGRAMMING 4) Before starting the communication with the PLC an entry in the network configuration atabase must be selected. Right-click on the project window to open the context menu and select Select Network to open the Select Network Index dialog. 5) Right-click on the project window to open the context menu and select Scan Rack to obtain the list of boards in the rack

91 7 PROGRAMMING 6) The information obtained from the CPU contains slot, head address, the actual IO length of the module as well as a preset IO length and module name. 7) You have to assign a GX Configurator file to each master, for which you intend to include autorefresh settings in the IPARAM file. Right-click on a DP master entry to select it and to open the context menu. From the context menu select Assign Project. (The menu item Remove Project removes the assignment of a GX Configurator file to a master.)

92 7 PROGRAMMING 8) A file browser dialog opens where you can select a GX Configurator-DP file to be assigned to the selected DP master. 9) Right-click on a DP master entry to select it and to open the context menu. From the context menu select Edit Settings

93 7 PROGRAMMING 10) The autorefresh settings editor dialog box appears. Check Slave Specific Transfer. POINT You can use automatic block transfer to speed up I/O data transfer processing. To use this function, set I/O devices for Block Transfer in the above dialog box. At this time, the auto refresh setting preset with the slave parameters is disabled. When the I/O devices set for Block Transfer are bit devices, set their head numbers in increments of 16 points. 11) Choose IPARAM File - Upload to PLC from the context menu and write the IPARAM parameters to the PLC CPU. POINT When IPARAM is written to the CPU module using this package during GX Developer start-up, it is not displayed in "Read from PLC" or "Delete PLC data" and other file list of GX Developer. Therefore, update the file list using the "Refresh view" button on the "Read from PLC" or "Delete PLC data" screen of GX Developer. 12) After setting the IPARAM parameters, reset the CPU module

94 7 PROGRAMMING (2) Program example When the automatic refresh function is used, the read/write program is not required for the input/output areas. Not required if the initial setting is not changed. Initial setting Slave trouble information cancel area setting Trouble information unnotification time setting Communication trouble area type (fixed type) Initial output data write Communication start Normal communication Processing in which input data is used Output data ON/OFF program Transmission data ON/OFF program Processing against communication trouble Trouble information read Trouble detection signal reset command pulse

95 7 PROGRAMMING Communication trouble detection signal reset Communication trouble area clear command pulse Communication trouble area clear command Mode change Change to self-diagnosis mode (MODE 2) Execution of operation mode change request Read of operation mode change results Read of present operation mode

96 7 PROGRAMMING 7.2 Normal Service Mode (MODE 0) Using FROM/TO Instruction The following shows the program example used when the I/O data is read/written using the FROM/TO instruction in the Normal service mode (MODE 0). Not required if the initial setting is not changed. Initial setting Slave trouble information cancel area setting Trouble information unnotification time setting Communication trouble area type (fixed type) Initial output data write Communication start Normal communication Input area read Processing in which input data is used Output data ON/OFF program Write to out put area

97 7 PROGRAMMING Processing against communication trouble Trouble information read Trouble detection signal reset command pulse Communication trouble detection signal reset Communication trouble area clear command pulse Communication trouble area clear command Mode change Change to self-diagnosis mode (MODE 2) Execution of operation mode change request

98 7 PROGRAMMING Read of operation mode change results Read of present operation mode

99 7 PROGRAMMING 7.3 Extended Service Mode (MODE E) Using FROM/TO Instruction The following shows the program example used when the I/O data is read/written using the FROM/TO instruction in the Extended service mode (MODE E). Not required if the initial setting is not changed. Initial setting Slave error information cancel area setting Trouble no information time setting Communication trouble area type (fixed type) Read of input start address Transmission of input start address to Z0 Read of output start address Transmission of output start address to Z1 Initial output data write Communication start Normal communication Input area read

100 7 PROGRAMMING Processing in which input data is used Output data ON/OFF program Write to output area Processing against communication trouble Trouble information read Trouble detection signal reset command pulse Communication trouble detection signal reset Communication trouble area clear command pulse Communication trouble area clear command

101 7 PROGRAMMING Mode change Change to self-diagnosis mode (MODE 2) Execution of operation mode change request Read of operation mode change results Read of present operation mode

102 7 PROGRAMMING 7.4 Normal Service Mode (MODE 0) Using Dedicated Instruction The following shows the program example used when the I/O data is read/written using the dedicated instruction for separation prevention in the Normal service mode (MODE 0). Not required if the initial setting is not changed. Initial setting Slave error information cancel area setting Trouble no information time setting Communication trouble area type (fixed type) Initial output data write Communication start Normal communication Effective setting of dedicated instructions Input area read Read in which separation is prevented Processing in which input data is used

103 7 PROGRAMMING Output data ON/OFF program Write to output area Write in which separation is prevented Processing against communication trouble Trouble information read Trouble detection signal reset command pulse Communication trouble detection signal reset Communication trouble area clear command pulse Communication trouble area clear command

104 7 PROGRAMMING Mode change Change to self-diagnosis mode (MODE 2) Execution of operation mode change request Read of operation mode change results Read of present operation mode

105 7 PROGRAMMING 7.5 Execution of Global Control The following shows the program example added when the global control is executed. The operation mode and I/O data read/write methods are not related to this program example. Use of global control function Transmission of SYNC command to groups 1 and 2 Request for global control

106 8 DEDICATED INSTRUCTIONS 8. DEDICATED INSTRUCTIONS 8.1 BBLKRD Instruction Usable devices Internal device MELSECNET/H Special Index Set data (System, user) File Direct J \ function Constant register register module K, H Bit Word Bit Word Z U \G Other n1 D n2 [Instruction symbol] [Execution condition] Command BBLKRD G.BBLKRD Un n1 D n2 Command P.BBLKRD GP.BBLKRD Un n1 D n2 Setting Data Setting data Detail Set Range Data Type Un Module head I/O number of QJ71PB92D 0 to FFH BIN16 bit n1 Head address of data to be read Specified device area D Head number of device in which read data is stored Specified device area Device name n2 Number of reading data 1 to 1920 (1 to 780H) BIN16 bit Function Error Program Example The data is read from the buffer memory of the specified module with the signals prevented from being separated. If the following event is encountered, an operation error will occur (Error code: 4101). A value out of the set range is set for the set data. The size of the data obtained by adding the number of data to be read to the head address of the data to be read exceeds the buffer memory size. The number of data to be read for the head address and subsequent is less than the number of reading data. Program for reading, with M10 = ON, the data amounting to 0 to 960 buffer memory addresses of QJ71PB92D (module head I/O number: 0) to D0 to D959 with the signals prevented from being separated. M10 GP.BBLKRD U0 K0 D0 K960 8 POINT Execute BBLKRD and BBLKWR for each scanning, respectively. If either of BBLKRD and BBLKWR is used, the transmission delay time will be longer

107 8 DEDICATED INSTRUCTIONS 8.2 BBLKWR Instruction Usable devices Internal device MELSECNET/H Special Index Set data (System, user) File Direct J \ function Constant register register module K, H Bit Word Bit Word Z U \G Other n1 S n2 [Instruction symbol] [Execution condition] Command BBLKWR G.BBLKWR Un n1 S n2 Command P.BBLKWR GP.BBLKWR Un n1 S n2 Setting Data Setting data Detail Set Range Data Type Un Module head I/O number of QJ71PB92D 0 to FFH BIN16 bit n1 Head address for data writing Specified device area S Head number of device in which write data is stored Specified device area Device name 8 n2 Number of writing data 1 to 960 (1 to 3C0H) BIN16 bit Function Error Program Example The data is written to the buffer memory of the specified module with the signals prevented from being separated. If the following event is encountered, an operation error will occur (Error code: 4101). A value out of the set range is set for the set data. The size of the data obtained by adding the number of data to be written to the head address for data writing exceeds the buffer memory size. The number of data to be written for the head address and subsequent is less than the number of writing data. Program for writing, with M10 = ON, the data amounting to 0 to 960 buffer memory addresses of QJ71PB92D (module head I/O number: 0) to D0 to D959 with the signals prevented from being separated. M10 GP.BBLKWR U0 K0 D0 K960 POINT Execute BBLKRD and BBLKWR for each scanning, respectively. If either of BBLKRD and BBLKWR is used, the transmission delay time will be longer

108 9 TROUBLESHOOTING 9. TROUBLESHOOTING For troubleshooting in the Normal service mode (MODE 0) and Extended service mode (MODE E), the causes of errors, which are located using the status of LEDs, and measures against the errors are described below. When the operation is in the Normal service mode (MODE 0) or Extended service mode (MODE E), the TEST LED indicator and PRM SET LED indicator of QJ71PB92D go off. LED Status Cause Corrective Action RUN Goes OFF The watchdog timer monitoring time is exceeded. Please consult your sales representative. SD/RD Flashes at a high rate There is a slave station with which the initial communication Please consult your sales representative. cannot be performed (The parameter does not match the actual slave station). TOKEN Goes OFF The token is not cycled. Make sure that the PROFIBUS- DP cable is connected. Check the terminating resistance set switch for correct function. Make sure that the station addresses are not overlapped with each other. Make sure that the HSA does not exceed the maximum station address of the network. PRM SET Flashes The parameter is not set. Set the parameters using the GX Configurator-DP. The parameters in the flash ROM Refer to Section 9.1. have been corrupted. RSP ERR Goes ON A communication trouble occurs. Read the trouble information from the communication trouble information area of the buffer memory. FAULT Goes ON An active slave station is not set Correct the parameters. for the parameter. A slave station having a station address overlapped with that of the master station is set for the parameter. The parameters in the flash ROM Refer to Section 9.1. have been corrupted. An unexpected error other than those specified above occurs. Please consult your sales representative

109 9 TROUBLESHOOTING 9.1 Initialization of Flash ROM When Parameters are Corrupted When the PRM SET LED is flickering or the FAULT LED has turned on, the parameters in the flash ROM may have been corrupted. If the parameters in the flash ROM have been corrupted, initialize the flash ROM by performing the following steps (1) to (10). (1) Set the CPU module to the STOP status. (2) Read the file (PLC parameter) from the CPU module using GX Developer. (3) In the I/O assignment settings of the PLC parameter dialog box, make the switch settings of the QJ71PB92D as shown below. Set the input format to "HEX.". Enter "FF01" into Switch 1 and 5. There is no need to enter values into Switch 2 to 4. After entering values into Switch 1 and 5, click the End button. (4) Write the new PLC parameters to the CPU module, and reapply the power or reset the CPU module. 9 (5) When the processing in Step (4) is performed, the QJ71PB92D starts up in the parameter setting mode (MODE 1). Perform the following steps 1) to 11) by the Device test of GX Developer to initialize the flash ROM. 1) Write "9H" to the buffer memory address 2255 (8CFH) of the QJ71PB92D. 2) Turn ON the operation mode change request signal (Y11). 3) When the operation mode change completion signal (X11) has turned ON, turn OFF the operation mode change request signal (Y11). 4) Write "FH" to the buffer memory address 2255 (8CFH) of the QJ71PB92D. 5) Turn ON the operation mode change request signal (Y11). 6) When the operation mode change completion signal (X11) has turned ON, turn OFF the operation mode change request signal (Y11). 7) Write "AH" to the buffer memory address 2255 (8CFH) of the QJ71PB92D. 8) Turn ON the operation mode change request signal (Y11). 9) When the operation mode change completion signal (X11) has turned ON, turn OFF the operation mode change request signal (Y11). 10) The TEST LED turns ON and the initialization of the flash ROM starts. 11) When the TEST LED turns OFF, the initialization of the flash ROM is completed

110 9 TROUBLESHOOTING (6) Read the file (PLC parameter) from the CPU module using GX Developer. (7) In the I/O assignment settings of the PLC parameter dialog box, delete the switch settings of the QJ71PB92D. Delete settings of Switch 1 and 5. After deleting settings of Switch 1 and 5, click the End button. (8) Write the PLC parameters, whose switch settings have been deleted, to the CPU module, and reapply the power or reset the CPU module. (9) When the PRM SET LED turns ON, the initialization of the flash ROM is normally completed. (The QJ71PB92D has returned to the initial status.) If the PRM SET LED does not turn ON, please contact your local Mitsubishi representative. (10) When the PRM SET LED has turned ON, write the parameters of the QJ71PB92D using GX Configurator-DP